0001477720-21-000007 | 10-K | XBRL Viewer

Cover - USD ($) $ in Billions	12 Months Ended
Cover - USD ($) $ in Billions	Jan. 31, 2021	Mar. 22, 2021
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Jan. 31, 2021
Current Fiscal Year End Date	--01-31
Entity File Number	001-39495
Entity Registrant Name	ASANA, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-3912448
Entity Address, Address Line One	1550 Bryant Street, Suite 200
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94103
City Area Code	415
Local Phone Number	525-3888
Title of 12(b) Security	Class A Common Stock, $0.00001 par value per share
Trading Symbol	ASAN
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Public Float	$ 2.0
Documents Incorporated by Reference	Portions of the registrant’s definitive Proxy Statement relating to the Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. Such definitive Proxy Statement will be filed with the Securities and Exchange Commission within 120 days after the end of the registrant’s fiscal year ended January 31, 2021.
Entity Central Index Key	0001477720
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		91,266,753
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		71,785,101

Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Current assets
Cash and cash equivalents	$ 259,878	$ 306,020
Marketable securities	126,396	45,288
Accounts receivable, net	32,194	12,659
Prepaid expenses and other current assets	27,295	16,667
Total current assets	445,763	380,634
Property and equipment, net	74,436	10,100
Restricted cash, noncurrent	0
Operating lease right-of-use assets	182,924	20,818
Investments, noncurrent	19,125	0
Other assets	8,871	5,483
Total assets	731,119	421,692
Current liabilities
Accounts payable	9,599	7,549
Accrued expenses and other current liabilities	41,616	18,241
Deferred revenue	103,875	62,725
Operating lease liabilities, current	8,386	11,613
Total current liabilities	163,476	100,128
Term loan, net	29,508	0
Convertible notes, net—related party	351,161	203,097
Operating lease liabilities, noncurrent	196,802	10,472
Other liabilities	2,961	2,729
Total liabilities	743,908	316,426
Commitments and contingencies (Note 8)
Commitments and contingencies (Note 8)
Redeemable convertible preferred stock, $0.00001 par value; 0 and 151,101 shares authorized as of January 31, 2021 and January 31, 2020, respectively; 0 and 73,577 shares issued and outstanding as of January 31, 2021 and January 31, 2020, respectively; liquidation preference of $250,999 as of January 31, 2020	0	250,581
Stockholders' (deficit) equity
Common stock, $0.00001 par value; 1,500,000 and 540,000 shares authorized as of January 31, 2021 and January 31, 2020, respectively; 161,480 and 76,688 shares issued and outstanding as of January 31, 2021 and January 31, 2020, respectively;	2	1
Additional paid-in capital	528,616	184,522
Accumulated other comprehensive income (loss)	39	(102)
Accumulated deficit	(541,446)	(329,736)
Total stockholders’ deficit	(12,789)	(145,315)
Total liabilities, redeemable convertible preferred stock, and stockholders’ deficit	$ 731,119	$ 421,692

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Temporary equity, shares outstanding (in shares)	0	73,577,000
Temporary equity, shares authorized (in shares)	0	151,101,000
Liquidation Preference		$ 250,999
Temporary equity, par value (in dollars per share)	$ 0.00001	$ 0.00001
Common stock, shares authorized (in shares)	1,500,000,000
Common stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Common Stock
Common stock, shares outstanding (in shares)	161,480,000	76,688,000

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Income Statement [Abstract]
Revenues	$ 227,004	$ 142,606	$ 76,770
Cost of revenues	28,741	19,881	13,832
Gross profit	198,263	122,725	62,938
Operating expenses:
Research and development	121,139	89,675	42,585
Sales and marketing	176,479	105,836	52,106
General and administrative	76,212	46,845	20,260
Total operating expenses	373,830	242,356	114,951
Loss from operations	(175,567)	(119,631)	(52,013)
Interest income and other income (expense), net	1,568	1,365	1,113
Interest expense	(36,178)	(78)	0
Loss before provision for income taxes	(210,177)	(118,344)	(50,900)
Provision for income taxes	1,533	245	28
Net loss	$ (211,710)	$ (118,589)	$ (50,928)
Net loss per share:
Basic and diluted (in dollars per share)	$ (1.99)	$ (1.69)	$ (0.78)
Weighted-average shares used in calculating net loss per share:
Basic and diluted (in shares)	106,344	70,335	65,214

Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (211,710)	$ (118,589)	$ (50,928)
Other comprehensive income (loss):
Net unrealized gains (losses) on marketable securities	(4)	7	23
Change in foreign currency translation adjustments	145	(29)	(18)
Comprehensive loss	$ (211,569)	$ (118,611)	$ (50,923)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Deficit - USD ($) $ in Thousands	Total	Redeemable convertible preferred stock	Common Stock	Additional Paid-In	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning balance (in shares) at Jan. 31, 2018			63,660,000
Beginning balance at Jan. 31, 2018	$ (142,202)		$ 1	$ 18,101	$ (85)	$ (160,219)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon the exercise of options (in shares)			4,607,000
Issuance of common stock upon the exercise of options	2,930			2,930
Vesting of early exercised stock options	613			613
Repurchases of common stock (in shares)			(11,000)
Repurchases of common stock	(14)			(14)
Stock-based compensation expense	8,585			8,585
Net unrealized gains (losses) on marketable securities	23				23
Foreign currency translation adjustments	(18)				(18)
Net loss	(50,928)					(50,928)
Ending balance (in shares) at Jan. 31, 2019			68,256,000
Ending balance at Jan. 31, 2019	(181,011)		$ 1	30,215	(80)	(211,147)
Temporary equity, beginning balance (in shares) at Jan. 31, 2018		67,317,000
Temporary equity, beginning balance at Jan. 31, 2018		$ 199,364
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of redeemable convertible preferred stock upon net exercise (in shares)		6,230,000
Issuance of redeemable convertible preferred stock upon net exercise	0	$ 51,006
Temporary equity, ending balance (in shares) at Jan. 31, 2019		73,547,000
Temporary equity, ending balance at Jan. 31, 2019		$ 250,370
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon the exercise of options (in shares)			8,456,000
Issuance of common stock upon the exercise of options	7,576			7,576
Vesting of early exercised stock options	1,402			1,402
Repurchases of common stock (in shares)			(24,000)
Repurchases of common stock	(77)			(77)
Stock-based compensation expense	48,425			48,425
Net unrealized gains (losses) on marketable securities	7				7
Deemed capital contribution on issuance of convertible note—related party	96,981			96,981
Foreign currency translation adjustments	(29)				(29)
Net loss	(118,589)					(118,589)
Ending balance (in shares) at Jan. 31, 2020			76,688,000
Ending balance at Jan. 31, 2020	(145,315)		$ 1	184,522	(102)	(329,736)
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of redeemable convertible preferred stock upon net exercise (in shares)		30,000
Issuance of redeemable convertible preferred stock upon net exercise	$ 211	$ 211
Temporary equity, ending balance (in shares) at Jan. 31, 2020	73,577,000	73,577,000
Temporary equity, ending balance at Jan. 31, 2020	$ 250,581	$ 250,581
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon the exercise of options (in shares)	11,012,000		11,012,000
Issuance of common stock upon the exercise of options	$ 18,057			18,057
Vesting of early exercised stock options	3,443			3,443
Repurchases of common stock (in shares)			(17,000)
Issuance of common stock upon the vesting and settlement of restricted stock units, net of shares withheld for taxes (in shares)			220,000
Issuance of common stock upon the vesting and settlement of restricted stock units, net of shares withheld for taxes	(378)			(378)
Conversion of redeemable convertible preferred stock to common stock in connection with direct listing	250,581		$ 1	250,580
Stock-based compensation expense	34,419			34,419
Net unrealized gains (losses) on marketable securities	(4)				(4)
Deemed capital contribution on issuance of convertible note—related party	37,973			37,973
Foreign currency translation adjustments	145				145
Net loss	(211,710)					(211,710)
Ending balance (in shares) at Jan. 31, 2021			161,480,000
Ending balance at Jan. 31, 2021	(12,789)		$ 2	$ 528,616	$ 39	$ (541,446)
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of redeemable convertible preferred stock upon net exercise (in shares)		73,577,000	73,577,000
Issuance of redeemable convertible preferred stock upon net exercise	$ 0	$ 250,581
Temporary equity, ending balance (in shares) at Jan. 31, 2021	0	0
Temporary equity, ending balance at Jan. 31, 2021	$ 0	$ 0

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
Consolidated Statements of Cash Flows - USD ($)	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Cash flows from operating activities
Net loss	$ (211,710,000)	$ (118,589,000)	$ (50,928,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Allowance for doubtful accounts	924,000	653,000	95,000
Depreciation and amortization	3,486,000	2,233,000	4,231,000
Gain on sale of property and equipment	(12,000)	0	0
Amortization of deferred contract acquisition costs	4,079,000	1,607,000	322,000
Stock-based compensation expense	34,225,000	48,386,000	8,547,000
Net accretion of discount of marketable securities	406,000	(1,016,000)	(820,000)
Change in fair value of redeemable convertible preferred stock warrant liability	0	117,000	35,000
Non-cash lease expense	16,389,000	8,228,000	0
Amortization of discount on convertible notes and term loan issuance costs	22,369,000	49,000	0
Non-cash interest expense	13,681,000	29,000	0
Changes in operating assets and liabilities:
Accounts receivable	(20,458,000)	(7,718,000)	(3,427,000)
Prepaid expenses and other current assets	(17,184,000)	(8,688,000)	(4,534,000)
Other assets	(3,390,000)	(1,791,000)	(3,690,000)
Accounts payable	(2,877,000)	3,472,000	362,000
Accrued expenses and other current liabilities	17,888,000	8,321,000	4,023,000
Deferred revenue	41,779,000	32,189,000	15,089,000
Operating lease liabilities	7,300,000	(7,618,000)	0
Other liabilities	235,000	0	515,000
Net cash used in operating activities	(92,870,000)	(40,136,000)	(30,180,000)
Cash flows from investing activities
Purchases of marketable securities	(191,576,000)	(77,759,000)	(103,205,000)
Sales of marketable securities	37,091,000	4,282,000	0
Maturities of marketable securities	53,842,000	93,394,000	61,950,000
Purchases of property and equipment	(57,344,000)	(6,878,000)	(2,850,000)
Sales of property and equipment	12,000	0	0
Capitalized internal-use software	(962,000)	(384,000)	(557,000)
Net cash provided by (used in) investing activities	(158,937,000)	12,655,000	(44,662,000)
Cash flows from financing activities
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs	0	0	51,006,000
Proceeds from term loan, net of issuance costs	30,915,000	0	0
Proceeds from issuance of convertible notes — related party	150,000,000	300,000,000	0
Taxes paid related to net share settlement of equity awards	(378,000)	0	0
Repurchases of common stock	(33,000)	(77,000)	(14,000)
Proceeds from exercise of stock options	20,501,000	11,674,000	4,301,000
Net cash provided by financing activities	201,005,000	311,597,000	55,293,000
Effect of foreign exchange rates on cash and cash equivalents and restricted cash	3,000	(19,000)	4,000
Net increase (decrease) in cash, cash equivalents, and restricted cash	(50,799,000)	284,097,000	(19,545,000)
Cash, cash equivalents, and restricted cash
Beginning of period	310,677,000	26,580,000	46,125,000
End of period	259,878,000	310,677,000	26,580,000
Reconciliation of cash, cash equivalents, and restricted cash to the consolidated balance sheets
Total cash, cash equivalents, and restricted cash	259,878,000	26,580,000	46,125,000
Supplemental cash flow data
Purchase of property and equipment in accounts payable and accrued liabilities	10,094,000	914,000	24,000
Vesting of early exercised stock options	3,443,000	1,402,000	613,000
Issuance of redeemable convertible preferred stock upon net exercise	$ 0	$ 211,000	$ 0

Organization	12 Months Ended
Organization	Jan. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization Organization and Description of Business Asana, Inc. (“Asana” or the “Company”) was incorporated in the state of Delaware on December 16, 2008. Asana is a work management platform that helps teams orchestrate work, from daily tasks to cross-functional strategic initiatives. The Company is headquartered in San Francisco, California.

Basis of Presentation and Summary of Significant Accounting Policies

12 Months Ended

Jan. 31, 2021

Accounting Policies [Abstract]

Basis of Presentation and Summary of Significant Accounting Policies

Principles of Consolidation

The accompanying consolidated financial statements have been prepared in conformity with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and include the accounts of the Company’s wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated on consolidation.

Fiscal Year

The Company’s fiscal year ends on January 31. For example, references to fiscal 2021, 2020 and 2019 refer to the fiscal year ended January 31, 2021, January 31, 2020 and January 31, 2019, respectively.

Reclassification of Class A and Class B Common Stock

On March 23, 2020, the Company amended and restated its certificate of incorporation to effect a reclassification of the Company’s Class A common stock to Class B common stock, and vice versa. There were no changes to the rights, preferences, and privileges of each class of common stock at this time. All references to Class A common stock have been recast to Class B common stock, and all references to Class B common stock have been recast to Class A common stock, in these consolidated financial statements to give retrospective effect to the reclassification for all periods presented.

Direct Listing

On September 30, 2020, the Company completed a direct listing of its Class A common stock (the “Direct Listing”) on the NYSE. The Company incurred fees related to financial advisory service, audit, and legal expenses in connection with the Direct Listing and recorded general and administrative expenses of $18.0 million for the year ended January 31, 2021. Prior to the Direct Listing, all 73,577,455 outstanding shares of redeemable convertible preferred stock were converted into an equivalent number of shares of Class B common stock.

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported and disclosed in the consolidated financial statements and accompanying notes. Estimates and assumptions reflected in the consolidated financial statements include, but are not limited to, revenue recognition, the useful lives and carrying values of long-lived assets, the fair value of the Convertible Notes (as defined below), the fair value of common stock, stock-based compensation expense, the period of benefit for deferred contract acquisition costs, and income taxes. Actual results could differ from those estimates.

Risks and Uncertainties

As a result of the COVID-19 pandemic, the Company has temporarily closed its headquarters and other physical offices, required its employees and contractors to work remotely, and implemented travel restrictions, all of which represent a significant disruption in how the Company operates its business. The operations of its partners and customers have likewise been disrupted. While the duration and extent of the COVID-19 pandemic depends on future developments that cannot be accurately predicted at this time, such as the extent and effectiveness of containment actions and the development of a vaccine, it has already had an adverse effect on the global economy and the ultimate societal and economic impact of the COVID-19 pandemic remains unknown. In particular, the

conditions caused by this pandemic could affect the rate of global IT spending and could adversely affect demand for the Company’s platform, lengthen the Company’s sales cycles, reduce the value or duration of subscriptions, negatively impact collections of accounts receivable, reduce expected spending from new customers, cause some of the Company’s paying customers to go out of business, limit the ability of the Company’s direct sales force to travel to customers and potential customers, and affect contraction or attrition rates of the Company’s customers, all of which could adversely affect the Company’s business, results of operations, and financial condition. As of the date of issuance of the financial statements, the Company is not aware of any specific event or circumstance related to COVID-19 that would require it to update its estimates or judgments or adjust the carrying value of its assets or liabilities. Actual results could differ from those estimates and any such differences may be material to the consolidated financial statements.

Revenue Recognition

The Company derives its revenues from monthly and annual subscription fees earned from customers accessing the platform. The Company’s policy is to exclude sales and other indirect taxes when measuring the transaction price of its subscription agreements. The Company accounts for revenue contracts with customers by applying the requirements of ASC 606, Revenue from Contracts with Customers, which includes the following steps:

•identification of the contract, or contracts, with the customer;

•identification of the performance obligations in the contract;

•determination of the transaction price;

•allocation of the transaction price to the performance obligations in the contract; and

•recognition of the revenues when, or as, the Company satisfies a performance obligation.

The Company’s subscription agreements generally have monthly or annual contractual terms and are billed in advance. Revenues are recognized ratably over the related contractual term beginning on the date that the platform is made available to a customer. The Company recognizes revenues ratably because the customer receives and consumes the benefits of the platform throughout the contractual period. Access to the platform represents a series of distinct services that comprise a single performance obligation that is satisfied over time. The Company’s contracts are generally non-cancelable and do not provide for refunds to customers in the event of cancellations.

A majority of the Company’s contracts give a right to bill for additional usage, which is deemed variable consideration. The variable consideration is allocated as the services are completed. An estimate of variable consideration is included in the transaction price if it is probable that a significant reversal of cumulative revenue recognized will not occur.

Research and Development

Research and development expenses consist primarily of personnel-related expenses such as salaries and related benefits for the Company’s product development employees. Also included are non-personnel costs such as product design costs, third-party services and consulting expenses, depreciation expense related to equipment used in research and development activities, and allocation of the Company’s general overhead expenses.

Advertising Expenses

Advertising expenses are charged to sales and marketing expense in the consolidated statements of operations as incurred. Advertising expenses were $68.0 million, $39.0 million, and $19.9 million for the years ended January 31, 2021, 2020, and 2019, respectively.

Stock‑Based Compensation Expense

The Company records stock-based compensation expense for all stock-based awards, including stock options, purchase rights issued under the 2019 Employee Stock Purchase Plan (“ESPP”), and restricted stock units (“RSUs”),

made to employees, non-employees, and directors based on estimated fair values recognized over the requisite service period. The fair value of stock options granted and purchase rights issued under the ESPP for purposes of calculating stock-based compensation expense is estimated on the grant date using the Black-Scholes pricing model. The Black-Scholes pricing model requires the Company to make assumptions and judgments about the inputs used in the calculation, including the expected term (weighted-average period of time that the options granted are expected to be outstanding), the volatility of the Company’s common stock, risk-free interest rate, and expected dividend yield. The expected term represents the period that the Company’s stock-based awards are expected to be outstanding. The expected term assumptions are determined based on the vesting terms, exercise terms, and contractual lives of the options. The volatility is based on an average of the historical volatilities of the common stock of comparable public companies with characteristics similar to those of the Company. The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant for periods corresponding with the expected life of the option. The Company’s expected dividend yield input is zero as it has not historically paid, nor does it expect in the future to pay, cash dividends on its common stock. Stock-based compensation expense for RSUs is measured based on the fair value of the underlying shares on the date of grant.

Stock-based compensation expense is recognized as expense over the requisite service period, which is generally the vesting period of the respective award. The Company uses the straight-line method for expense attribution. The Company accounts for forfeitures as they occur.

Foreign Currency Translation and Transactions

The functional currency of each of the Company’s wholly owned subsidiaries is the applicable local currency or the U.S. dollar. The translation of foreign currencies into U.S. dollars is performed for assets and liabilities using current foreign currency exchange rates in effect at the balance sheet date and for revenues and expense accounts using average foreign currency exchange rates during the period. Capital accounts are translated at historical foreign currency exchange rates. Translation gains and losses are included in stockholders’ deficit as a component of accumulated other comprehensive income (loss). Adjustments that arise from foreign currency exchange rate changes on transactions denominated in a currency other than the functional currency are included in other income (expense), net on the consolidated statements of operations and were not material for the years ended January 31, 2021, 2020, and 2019.

Segment Information

The Company’s chief operating decision-maker is its Chief Executive Officer (“CEO”), who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance, and allocating resources. The Company manages its operations and allocates resources as a single operating segment. For information regarding the Company’s revenues and long-lived assets by geographic area, see Note 15, “Geographic Information.”

Cash, Cash Equivalents, and Restricted Cash

The Company considers all highly liquid investments with original maturities at the date of purchase of three months or less to be cash equivalents. Cash and cash equivalents are stated at cost, which approximates fair value.

Under various facilities operating lease agreements, the Company was required to maintain a restricted cash deposit as collateral. The Company had no restricted cash as of January 31, 2021 and $4.7 million of restricted cash for use as security deposits for standby letters of credit issued to landlords as of January 31, 2020.

Cash, cash equivalents, and restricted cash as reported in the Company’s consolidated statements of cash flows includes the aggregate amounts of cash, cash equivalents, and restricted cash as shown on the consolidated balance

sheets. Cash, cash equivalents, and restricted cash as reported in the Company’s consolidated statements of cash flows consist of the following (in thousands):


	As of January 31,
	2021		2020		2019

Cash and cash equivalents	$	259,878	$	306,020	$	23,778
Restricted cash	—		4,657		2,802
Cash, cash equivalents, and restricted cash	$	259,878	$	310,677	$	26,580

Marketable Securities and Investments

Marketable securities are partially comprised of U.S. government securities, commercial paper, and corporate bonds with an original contractual maturity or a remaining maturity at the time of purchase of greater than three months and no more than 37 months. Marketable securities with a remaining maturity at the time of purchase in excess of 12 months are presented as investments, non-current on the consolidated balance sheets. These marketable securities are classified as available-for-sale securities and are carried at fair value with unrealized gains and losses reported in accumulated other comprehensive income (loss) as a separate component of stockholders’ deficit. Interest receivable on these securities is presented in prepaid expenses and other current assets on the consolidated balance sheets. Realized gains and losses and other-than-temporary impairments, if any, on available-for-sale securities are recognized upon sale and are included in other income (expense), net in the consolidated statements of operations. The cost of securities sold is based on the specific identification method. Marketable securities are reviewed periodically to identify possible other-than-temporary impairments. No impairment loss has been recorded on the Company’s marketable securities during the years ended January 31, 2021, 2020, or 2019.

Accounts Receivable

Accounts receivable are stated at realizable value, net of allowance for doubtful accounts. The Company’s estimate is based on historical collection experience and a review of the current status of accounts receivable. The Company’s allowance for doubtful accounts was $0.6 million and $0.1 million as of January 31, 2021 and 2020, respectively.

Concentration of Credit Risk

Financial instruments that potentially subject the Company to a concentration of credit risk consist of cash, cash equivalents, and marketable securities. Substantially all the Company’s cash and cash equivalents are held by four financial institutions that management believes are of high credit quality. Such deposits may, at times, exceed federally insured limits. Cash equivalents are invested in highly rated money market funds.

A large portion of the Company’s customers authorize the Company to bill their credit card accounts through the Company’s third-party payment processing partners, presenting additional credit risk. For the years ended January 31, 2021, 2020, and 2019, there were no individual customers that accounted for 10% or more of the Company’s revenues. The Company had one customer that accounted for approximately 13% of accounts receivable at January 31, 2021. The Company had no customers that accounted for more than 10% of accounts receivable as of January 31, 2020.

Fair Value of Financial Instruments

The carrying amounts reflected in the consolidated balance sheets for cash equivalents, accounts receivable, and accounts payable approximate their respective fair values due to the short maturities of those instruments. Available-for-sale marketable securities are recorded at fair value on the consolidated balance sheets.

The Company accounts for certain of its financial assets at fair value. In determining and disclosing fair value, the Company uses a fair value hierarchy established by U.S. GAAP. The guidance defines fair value as an exit price, representing the amount that would be received upon the sale of an asset or paid to transfer a liability in an orderly

transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the Company utilizes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

Level 1 Observable inputs such as quoted prices in active markets.

Level 2 Inputs other than the quoted prices in active markets that are observable either directly or indirectly.

Level 3 Unobservable inputs in which there is little or no market data and that are significant to the fair value of the assets or liabilities.

In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible as well as considers counterparty credit risk in its assessment of fair value.

Lease Obligations

The Company determines if an arrangement is a lease at inception by determining if the contract conveys the right to control the issue of an identified asset for a period of time in exchange for consideration and other facts and circumstances. Right-of-use (“ROU”) assets and lease liabilities are recognized at commencement date based on the present value of remaining lease payments over the lease term. For this purpose, the Company considers only payments that are fixed and determinable at the time of commencement. As the Company’s leases do not provide an implicit rate, the Company uses the incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The incremental borrowing rate is a hypothetical rate based on the Company’s understanding of what its credit rating would be. The ROU assets also include any lease payments made prior to commencement and are recorded net of any lease incentives received. The lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options. The lease agreements may contain variable costs such as common area maintenance, insurance, real estate taxes or other costs. Variable lease costs are expensed as incurred on the consolidated statements of operations. The Company’s lease agreements generally do not contain any residual value guarantees, restrictions, or covenants.

The Company has lease agreements with lease and non-lease components. The Company elects to combine lease and non-lease components as a single lease component for all classes of underlying assets. The Company elects to not record leases with an initial term of 12 months on the balance sheet and the associated lease payments are recognized in the consolidated statements of operations on a straight-line basis over the lease term.

Operating leases are included in operating lease ROU assets, operating lease liabilities, current, and operating lease liabilities, noncurrent on the consolidated balance sheets.

Property and Equipment, Net

The Company records its property and equipment at cost. Depreciation is computed on the straight-line method over the estimated useful lives of two to three years. Leasehold improvements are amortized over the remaining period of the lease, or the estimated useful life of the improvement, whichever is shorter. Repair and maintenance expenditures, which are not considered improvements and do not extend the useful life of an asset, are expensed as incurred.


Asset Type						Life (Years)
Desktop and other computer equipment						2-3
Furniture and fixtures						3
Leasehold improvements						Shorter of lease term or estimated useful life
Capitalized internal-use software						3

Capitalized Internal-Use Software

The Company capitalizes certain internal software development costs, consisting primarily of direct labor associated with creating the internally developed software. Capitalized costs are amortized using the straight-line method over the estimated useful life of the software once it is ready for its intended use. The Company believes the straight-line recognition method best approximates the manner in which the expected benefit will be derived.

Impairment of Long-Lived Assets

The Company evaluates its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of such asset groups may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset group to future undiscounted net cash flows expected to be generated by the asset group. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell. No impairment losses were recorded during the years ended January 31, 2021, 2020 and 2019.

Income Taxes

The Company accounts for income taxes under the asset and liability method, which requires that deferred income taxes be provided for temporary differences between the tax basis of the Company’s assets and liabilities and their financial statement reported amounts. In addition, deferred tax assets are recorded for the future benefit of utilizing net operating loss carryforwards and research and development credit carryforwards.

A valuation allowance is provided against deferred tax assets unless it is more likely than not that they will be realized. If there is significant negative evidence that the near-term realization of certain assets are deemed unlikely, the Company would record a valuation allowance against the deferred tax assets. The Company regularly assesses the continuing need for a valuation allowance against its deferred tax assets. Significant judgment is required to determine whether a valuation allowance continues to be necessary and the amount of such valuation allowance, if appropriate. The Company considers all available evidence, both positive and negative, to determine, based on the weight of available evidence, whether it is more likely than not that some or all of the deferred tax assets will not be realized. In evaluating the continued need for a valuation allowance, the Company considers, among other things, the nature, frequency, and severity of current and cumulative losses, forecasts of future profitability, and the duration of statutory carryforward periods.

The Company performs a comprehensive review of potential uncertain tax positions in each jurisdiction in which the Company operates. The Company accounts for uncertain tax positions in accordance with ASC 740, Income Taxes. ASC 740 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax provision that an entity takes or expects to take in a tax return.

The Company’s policy is to include penalties and interest related to income tax matters within the Company’s benefit from (provision for) income taxes.

Redeemable Convertible Preferred Stock Warrants

The Company had redeemable convertible preferred stock warrants exercisable for its Series B redeemable convertible preferred stock, which were classified as liabilities on the Company’s balance sheets. The redeemable convertible preferred stock warrants were subject to remeasurement at each balance sheet date, and any change in fair value was recognized as a component of other income (expense), net. In November 2019, all of the Company’s outstanding redeemable convertible preferred stock warrants were net exercised for 30,606 shares of Series B redeemable convertible preferred stock. See Note 11. “Stockholders’ Deficit” for further discussion.

Net Loss Per Share

Basic and diluted net loss per share attributable to common stockholders is presented in conformity with the two-class method required for participating securities. All series of the Company’s redeemable convertible preferred stock and early exercised stock options are considered to be participating securities because all holders are

entitled to receive a non-cumulative dividend on a pari passu basis in the event that a dividend is paid on the common stock. The holders of the redeemable convertible preferred stock do not have a contractual obligation to share in the Company’s losses. As such, the Company’s net losses for the years ended January 31, 2021, 2020 and 2019 were not allocated to these participating securities.

The rights, including the liquidation and dividend rights, of the holders of Class A and Class B common stock are identical, except with respect to voting. As the liquidation and dividend rights are identical, the undistributed earnings are allocated on a proportionate basis and the resulting net loss per share attributed to common stockholders will, therefore, be the same for both Class A and Class B common stock on an individual or combined basis.

Under the two-class method, basic net loss per share attributable to common stockholders is computed by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period.

Diluted earnings per share attributable to common stockholders adjusts basic earnings per share for the potentially dilutive impact of redeemable convertible preferred stock warrants, stock options, RSUs, and redeemable convertible preferred stock. As the Company has reported losses for all periods presented, all potentially dilutive securities are anti-dilutive, and accordingly, basic net loss per share equaled diluted net loss per share.

Recently Issued Accounting Pronouncements Not Yet Adopted

In June 2016, the FASB issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost. It also eliminates the concept of other-than-temporary impairment and requires credit losses related to available-for-sale debt securities to be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities. These changes will result in more timely recognition of credit losses. The Company expects to adopt ASU 2016-13 as of February 1, 2021 and is currently evaluating the impact of adoption.

In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40), Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. Under existing GAAP, there is diversity in practice in accounting for the costs of implementing cloud computing arrangements that are service contracts. The amendments in ASU No. 2018-15 amend the definition of a hosting arrangement and requires a customer in a hosting arrangement that is a service contract to capitalize certain costs as if the arrangement were an internal-use software project. The Company expects to adopt ASU 2018-15 as of February 1, 2021 and is currently evaluating the impact of adoption.

In August 2020, the FASB issued ASU No. 2020-06, Accounting for Convertible Instruments and Contracts in an Entity's Own Equity, which simplifies the accounting for certain convertible instruments, amends the guidance on derivative scope exceptions for contracts in an entity's own equity, and modifies the guidance on diluted earnings per share calculations as a result of these changes. The guidance is effective for the Company’s fiscal years beginning after February 1, 2022, and earlier adoption is permitted. The Company is currently evaluating the impact and timing of adopting ASU 2020-06.

Recently Adopted Accounting Pronouncements

In December 2019, the FASB issued ASU No. 2019-12, Simplifying the Accounting for Income Taxes (Topic 740). The amendments in the updated guidance simplify the accounting for income taxes by removing certain exceptions and improving consistent application of other areas of the topic by clarifying the guidance. The Company has adopted this standard as of February 1, 2020. The adoption of the standard did not have a material impact on the Company’s consolidated financial statements for the year ended January 31, 2021 or for any of the interim periods therein.

On February 1, 2019, the Company adopted Accounting Standards Update No. 2016-02, Leases (“Topic 842” or “ASC 842”) (ASU 2016-02) on a modified basis using the optional transition method, and accordingly, has not

restated comparative periods. Balances and related disclosures for fiscal 2019 continue to be presented in accordance with ASC 840, Leases. Results and disclosures for fiscal 2020 are presented under ASC 842.

The Company elected the package of practical expedients permitted under the transition guidance, which allowed the Company to carryforward its historical lease classification, the assessment on whether a contract was or contains a lease, and the initial direct costs for any leases that existed prior to February 1, 2019, the adoption date. The Company elected the use of the hindsight practical expedient in determining the lease term and assessing the likelihood that the lease renewal or termination option will be exercised. The Company also elected to combine lease and non-lease components and to keep leases with an initial term of 12 months or less off the balance sheets and recognize the associated lease payments in the consolidated statements of operations on a straight-line basis over the lease term.

Upon adoption, the Company recognized total ROU assets of $16.5 million, with corresponding operating lease liabilities of $18.3 million on the consolidated balance sheet. The ROU assets include adjustments for prepayments and accrued lease incentive liabilities. The adoption did not impact beginning accumulated deficit or the prior year consolidated statement of operations and statement of cash flows.

In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820), which amends disclosure requirements for fair value measurements by requiring new disclosures, modifying existing requirements, and eliminating others. On February 1, 2020, the Company adopted ASU 2018-13. The adoption of the standard did not have a material impact on the Company’s consolidated financial statements.

Revenue

12 Months Ended

Jan. 31, 2021

Revenue from Contract with Customer [Abstract]

Revenue

Deferred Revenue and Remaining Performance Obligations

Total deferred revenue was $105.9 million and $64.1 million as of January 31, 2021 and January 31, 2020, respectively, of which $2.0 million and $1.4 million, respectively, is presented within other liabilities, as a noncurrent liability, in the consolidated balance sheets as of January 31, 2021 and January 31, 2020, respectively.

The Company recognized $62.7 million and $31.8 million of revenues during the years ended January 31, 2021 and 2020, respectively, that were included in the deferred revenue balance at the beginning of the respective period.

As of January 31, 2021, the Company's remaining performance obligations from subscription contracts were $122.3 million, of which the Company expects to recognize approximately 89% as revenue over the next 12 months and the remainder thereafter.

Deferred Contract Acquisition Costs

Deferred contract acquisition costs represent gross deferred contract acquisition costs less accumulated amortization. Sales commissions earned by the Company’s sales force, as well as related payroll taxes, are considered to be incremental and recoverable costs of obtaining a contract with a customer. As a result, these amounts have been capitalized as deferred contract acquisition costs within prepaid and other current assets and other assets on the consolidated balance sheets.

Deferred contract acquisition costs are amortized over a period of benefit of three years. The period of benefit was estimated by considering factors such as historical customer attrition rates, the useful life of the Company’s technology, and the impact of competition in the software-as-a-service industry.

The following table summarizes the activity of deferred contract acquisition costs (in thousands):


	Year Ended January 31,
	2021		2020

Beginning balance	$	6,107	$	2,071
Capitalization of contract acquisition costs	10,065		5,643
Amortization of deferred contract acquisition costs	(4,079)		(1,607)
Ending balance	$	12,093	$	6,107

Deferred contract acquisition costs, current	$	5,742	$	2,692
Deferred contract acquisition costs, noncurrent	6,351		3,415
Total deferred contract acquisition costs	$	12,093	$	6,107

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Subparagraph (e)
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

+ Details

Fair Value Measurements

12 Months Ended

Jan. 31, 2021

Fair Value Disclosures [Abstract]

Fair Value Measurements

The following table summarizes, for assets and liabilities measured at fair value, the respective fair value and classification by level of input within the fair value hierarchy (in thousands):


	As of January 31, 2021
	Level 1		Level 2		Level 3		Total
Current Assets
Cash equivalents
Money market funds	$	207,187	$	—	$	—	$	207,187
Commercial paper	—		2,230		—		2,230
Certificates of deposit	—		1,050		—		1,050
Total cash equivalents	$	207,187	$	3,280	$	—	$	210,467
Marketable securities
Commercial paper	$	—	$	43,159	$	—	$	43,159
U.S. treasury bonds	40,245		—		—		40,245
Corporate bonds	—		40,286		—		40,286
Certificate of deposit	—		2,706		—		2,706
Total marketable securities	$	40,245	$	86,151	$	—	$	126,396

Non-current Assets
Corporate bonds	—		19,125		—		19,125
Total assets	$	247,432	$	108,556	$	—	$	355,988


	As of January 31, 2020
	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents
Money market funds	$	610	$	—	$	—	$	610
Total cash equivalents	$	610	$	—	$	—	$	610
Marketable securities
Commercial paper	$	—	$	16,452	$	—	$	16,452
U.S. treasury bonds	17,590		—		—		17,590
Corporate bonds	—		11,246		—		11,246
Total marketable securities	17,590		27,698		—		45,288
Total assets	$	18,200	$	27,698	$	—	$	45,898

There were no transfers of financial assets or liabilities into or out of Level 3 during the years ended January 31, 2021 and 2020.

The following table summarizes the change in the redeemable convertible preferred stock warrant liability (in thousands):


	Amount


Balance as of January 31, 2019	$	94
Adjustment resulting from change in fair value recognized in the consolidated statement of operations	117
Exercise of redeemable convertible preferred stock warrants	(211)
Balance as of January 31, 2020	$	—

The following table summarizes the Company's investments in marketable securities on the consolidated balance sheets (in thousands):


	As of January 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Current Assets
Commercial paper	$	43,158	$	2	$	(1)	$	43,159
U.S. treasury bonds	40,236		9		—		40,245
Corporate bonds	40,278		9		(1)		40,286
Certificates of deposit	2,705		1		—		2,706
Total marketable securities	$	126,377	$	21	$	(2)	$	126,396

Non-current Assets
Corporate bonds	19,120		8		(3)		19,125
Total assets	$	145,497	$	29	$	(5)	$	145,521


	As of January 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Commercial paper	$	16,452	$	—	$	—	$	16,452
U.S. treasury bonds	17,571		19		—		17,590
Corporate bonds	11,237		9		—		11,246
Total marketable securities	$	45,260	$	28	$	—	$	45,288

In January 2020 and June 2020, the Company issued convertible notes to a trust affiliated with the Company’s CEO. The fair values of the convertible notes at issuance on January 30, 2020 and June 26, 2020 were $203.0 million and $112.0 million, respectively. There were no significant changes in fair value between January 30, 2020 and January 31, 2020. At January 31, 2021, the fair value of the convertible notes issued in January 2020 and in June 2020 were $399.1 million and $202.7 million, respectively. The Company considers the fair values of the convertible notes to be Level 3 measurements as the fair value is estimated using significant unobservable inputs. The fair values of the convertible notes were measured using a binomial lattice model. Inputs used to determine the estimated fair values of the convertible notes include equity volatility of comparable companies, risk-free interest rate, and estimated fair value of the Company’s common stock. Certain unobservable inputs used in the fair value measurements of the convertible notes include assumptions related to future liquidity events. See Note 6, “Convertible Notes—Related Party,” for further discussion.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Balance Sheet Components

12 Months Ended

Jan. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Balance Sheet Components

Property and Equipment, Net

Property and equipment, net, consisted of the following (in thousands):


	As of January 31,
	2021		2020

Desktop and other computer equipment	$	2,229	$	2,530
Furniture and fixtures	2,012		1,857
Leasehold improvements	13,686		12,047
Capitalized internal-use software	10,498		9,341
Construction in progress	68,409		3,871
Total gross property and equipment	96,834		29,646
Less: Accumulated depreciation and amortization	(22,398)		(19,546)
Total property and equipment, net	$	74,436	$	10,100

Depreciation and amortization expense for the years ended January 31, 2021, 2020, and 2019 was $3.5 million, $2.2 million, and $4.2 million, respectively.

The changes in the carrying value of capitalized internal-use software costs for the periods presented below are as follows (in thousands):


	Amount



Balance as of February 1, 2019	$	1,041
Capitalization of internal-use software costs	423
Amortization of internal-use software costs	(653)
Balance as of January 31, 2020	811
Capitalization of internal-use software costs	1,157
Amortization of internal-use software costs	(612)
Balance as of January 31, 2021	$	1,356

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):


	As of January 31,
	2021		2020
Prepaid expenses	$	16,696	$	10,479
Deferred contract acquisition costs, current	5,742		2,692
Other current assets	4,857		3,496
Total prepaid expenses and other current assets	$	27,295	$	16,667

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):


	As of January 31,
	2021		2020
Accrued payroll liabilities	10,607		$	3,479
Accrued taxes for fringe benefits	2,963		3,312
Accrued advertising expenses	7,020		1,627
Accrued property and equipment	4,715		484
Accrued consulting expenses	2,393		246
Other liabilities	13,918		9,093
Total accrued expenses and other current liabilities	$	41,616	$	18,241

Convertible Notes—Related Party

12 Months Ended

Jan. 31, 2021

Convertible Notes - Related Party

Convertible Notes—Related Party

In January 2020 and June 2020, the Company issued convertible promissory notes (collectively, “Convertible Notes”), as discussed below.

January 2020 Note

In January 2020, the Company issued a 3.5% unsecured senior mandatory convertible promissory note due in 2025 (“January 2020 Convertible Note”) in a private placement to an entity affiliated with the Company’s CEO. The January 2020 Convertible Note with a principal amount of $300 million is a senior, unsecured obligation of the Company. The January 2020 Convertible Note does not contain any financial covenants or place any dividend restrictions on the Company. The January 2020 Convertible Note matures, and would be converted, on January 30, 2025 (“January 2020 Convertible Note Maturity Date”) unless earlier converted as discussed below or redeemed in

connection with the Company’s bankruptcy, insolvency, or other similar events. The January 2020 Convertible Note bears interest at a fixed rate of 3.5% per annum that will be compounded annually and payable in-kind, resulting in an aggregate $356.3 million being due on settlement (the “January 2020 Convertible Note Settlement Amount”).

The initial conversion rate is 31.6649 shares of the Company’s Class B common stock per $1,000 of the January 2020 Convertible Note Settlement Amount, which equates to a conversion price of $31.58 of the January 2020 Convertible Note Settlement Amount per share. The initial conversion rate is subject to standard anti-dilution adjustments. The holder of the January 2020 Convertible Note is not entitled to convert the January 2020 Convertible Note at any time. The January 2020 Convertible Note is convertible at the option of the Company at any time until the close of business on the second scheduled trading day prior to the January 2020 Convertible Note Maturity Date during any calendar quarter beginning after the date of a public listing of the Company’s Class A common stock on any national securities exchange under the following circumstances:

•if the closing price of the Company’s Class A common stock for at least 20 trading days in the 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter equals or exceeds the conversion price (initially $31.58); or

•upon the occurrence of specified corporate events as described in the January 2020 Convertible Note.

If the January 2020 Convertible Note is outstanding as of the January 2020 Convertible Note Maturity Date, it will automatically convert into an number of shares of Class A common stock of the Company at a conversion rate equal to the greater of (i) the initial conversion rate per $1,000 of the January 2020 Convertible Note Settlement Amount, subject to standard anti-dilution adjustments, and (ii) the lesser of (a) $1,000 divided by the volume-weighted average price of the Company’s Class A common stock for the 20 trading days ending on the last trading day immediately preceding the January 2020 Convertible Note Maturity Date and (b) 50.6638 shares per each $1,000 of the January 2020 Convertible Note Settlement Amount, subject to standard anti-dilution adjustments. In the event that a public listing of the Company’s common stock has not occurred by the close of business on the second day prior to the January 2020 Convertible Note Maturity Date, the January 2020 Convertible Note shall convert into shares of the capital stock of the Company’s most recent equity financing, at the lesser of (i) 50.6638 shares per each $1,000 of the January 2020 Convertible Note Settlement Amount, subject to standard anti-dilution adjustments, and (ii) $1,000 divided by the price per share at which such capital stock was sold in the most recent equity financing per each $1,000 of the January 2020 Convertible Note Settlement Amount of the January 2020 Convertible Note.

The January 2020 Convertible Note was initially measured and recorded at fair value based on a binomial lattice model, including assumptions associated with the probability of future liquidity events. The excess $97.0 million of the proceeds received from the issuance of the January 2020 Convertible Note over the fair value of the January 2020 Convertible Note was recorded as a capital contribution in additional paid-in capital. The difference between the par value of the January 2020 Convertible Note and the carrying amount represents the debt discount that is amortized to interest expense at an effective interest rate over the term of the January 2020 Convertible Note. Debt issuance costs for the January 2020 Convertible Note were not material.

June 2020 Note

In June 2020, the Company issued a 3.5% unsecured senior mandatory convertible promissory note due in 2025 (“June 2020 Convertible Note”) in a private placement to an entity affiliated with the Company’s CEO. The June 2020 Convertible Note with a principal amount of $150 million is a senior, unsecured obligation of the Company. The June 2020 Convertible Note does not contain any financial covenants or place any dividend restrictions on the Company. The June 2020 Convertible Note matures, and would be converted, on June 26, 2025 (“June 2020 Convertible Note Maturity Date”) unless earlier converted as discussed below or redeemed in connection with the Company’s bankruptcy, insolvency, or other similar events. The June 2020 Convertible Note bears interest at a fixed rate of 3.5% per annum that will be compounded annually and payable in-kind, resulting in an aggregate $178.2 million being due on settlement (the “June 2020 Convertible Note Settlement Amount”).

The initial conversion rate is 32.1658 shares of the Company’s Class B common stock per $1,000 of the June 2020 Convertible Note Settlement Amount, which equates to a conversion price of $31.09 of the June 2020

Convertible Note Settlement Amount per share. The initial conversion rate is subject to standard anti-dilution adjustments. The holder of the June 2020 Convertible Note is not entitled to convert the June 2020 Convertible Note at any time. The June 2020 Convertible Note is convertible at the option of the Company at any time until the close of business on the second scheduled trading day prior to the June 2020 Convertible Note Maturity Date during any calendar quarter beginning after the date of a public listing of the Company’s Class A common stock on any national securities exchange under the following circumstances:

•upon the occurrence of specified corporate events as described in the June 2020 Convertible Note.

If the June 2020 Convertible Note is outstanding as of the June 2020 Convertible Note Maturity Date, it will automatically convert into an number of shares of Class A common stock of the Company at a conversion rate equal to the greater of (i) the initial conversion rate per $1,000 of the June 2020 Convertible Note Settlement Amount, subject to standard anti-dilution adjustments, and (ii) the lesser of (a) $1,000 divided by the volume-weighted average price of the Company’s Class A common stock for the 20 trading days ending on the last trading day immediately preceding the June 2020 Convertible Note Maturity Date and (b) 51.4653 shares per each $1,000 of the June 2020 Convertible Note Settlement Amount, subject to standard anti-dilution adjustments. In the event that a public listing of the Company’s common stock has not occurred by the close of business on the second day prior to the June 2020 Convertible Note Maturity Date, the June 2020 Convertible Note shall convert into shares of the capital stock of the Company’s most recent equity financing, at the lesser of (i) 51.4653 shares per each $1,000 of the June 2020 Convertible Note Settlement Amount, subject to standard anti-dilution adjustments, and (ii) $1,000 divided by the price per share at which such capital stock was sold in the most recent equity financing per each $1,000 of the June 2020 Convertible Note Settlement Amount of the June 2020 Convertible Note.

The June 2020 Convertible Note was initially measured and recorded at fair value based on a binomial lattice model, including assumptions associated with the probability of future liquidity events. The excess $38.0 million of the proceeds received from the issuance of the June 2020 Convertible Note over the fair value of the June 2020 Convertible Note was recorded as a capital contribution in additional paid-in capital. The difference between the par value of the June 2020 Convertible Note and the carrying amount represents the debt discount that is amortized to interest expense at an effective interest rate over the term of the June 2020 Convertible Note. Debt issuance costs for the June 2020 Convertible Note were not material.

The net carrying amount of the Convertible Notes was as follows (in thousands):


	As of January 31, 2021		As of January 31, 2020
Principal	450,000		$	300,000
Unamortized discount	(112,548)		(96,932)
Accrued interest expense	13,709		29
Net carrying amount	$	351,161	$	203,097

The principal amounts, maturity dates, range of shares potentially issuable at maturity, initial conversion price, and shares issuable at maturity for each of the 2020 Notes are presented below (in thousands, except share price):


	Aggregate Principal Amount		Maturity Date	Range of Shares Potentially Issuable at Maturity(1)	Initial Conversion Price(1)
January 2020 Convertible Note	$	300,000	1/30/2025	11,282 - 18,052	$	31.58
June 2020 Convertible Note	150,000		6/26/2025	5,731 - 9,169	31.09
Total	$	450,000		17,013 - 27,221

__________________

1 Subject to customary anti-dilution and other adjustments.

Interest expense related to the Convertible Notes was as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
Amortization of debt discount	$	22,357	$	49	$	—
Contractual interest expense	13,681		29		—
Total interest expense	$	36,038	$	78	$	—

Debt

In April 2020, the Company entered into a five-year $40.0 million term loan agreement with Silicon Valley Bank. The agreement provides for a senior secured term loan facility, in an aggregate principal amount of up to $40.0 million to be used for the construction of the Company’s new corporate headquarters. Interest will accrue on any outstanding balance at a floating rate per annum equal to the prime rate (per the Wall Street Journal) plus an applicable margin equal to either (a) 0% if the Company’s unrestricted cash at the lender is equal to or less than $80.0 million, or (b) (0.5)% if the Company’s unrestricted cash at the lender is between $80.0 million and $100.0 million, or (c) (1.0)% if the Company’s unrestricted cash balance at the lender is equal to or greater than $100.0 million. Interest shall be payable monthly.

The Credit Agreement contains certain customary affirmative and negative covenants, including maintaining Remaining Month Liquidity (“RML”) of at least six at all times, with an unrestricted cash bank of $60 million. RML is defined as the ratio of (i) unrestricted cash at Silicon Valley Bank, plus (ii) the aggregate amount of unrestricted cash held by the Company in deposit accounts in which Silicon Valley Bank obtains control, divided by (iii) the average monthly burn on a trailing six-month basis. Other negative covenants include a limit on the Company's ability to incur additional indebtedness, dispose of assets, engage in certain merger or acquisition transactions, pay dividends or make distributions, and certain other restrictions on the Company's activities each defined specifically in the agreement.

As of January 31, 2021, $31.0 million was drawn and outstanding under this term loan. As of January 31, 2021, the Company was in compliance with all financial covenants related to the term loan.

The net carrying amount of the term loan was as follows (in thousands):


Principal	$	31,000
Accrued Interest	44
Unamortized loan issuance costs	(71)
Net carrying amount	$	30,973


Term loan, current	$	1,465
Term loan, noncurrent	$	29,508

Debt

12 Months Ended

Jan. 31, 2021

Debt Disclosure [Abstract]

Debt

Convertible Notes—Related Party

In January 2020 and June 2020, the Company issued convertible promissory notes (collectively, “Convertible Notes”), as discussed below.

January 2020 Note

•upon the occurrence of specified corporate events as described in the January 2020 Convertible Note.

June 2020 Note

•upon the occurrence of specified corporate events as described in the June 2020 Convertible Note.

The net carrying amount of the Convertible Notes was as follows (in thousands):


	As of January 31, 2021		As of January 31, 2020
Principal	450,000		$	300,000
Unamortized discount	(112,548)		(96,932)
Accrued interest expense	13,709		29
Net carrying amount	$	351,161	$	203,097


	Aggregate Principal Amount		Maturity Date	Range of Shares Potentially Issuable at Maturity(1)	Initial Conversion Price(1)
January 2020 Convertible Note	$	300,000	1/30/2025	11,282 - 18,052	$	31.58
June 2020 Convertible Note	150,000		6/26/2025	5,731 - 9,169	31.09
Total	$	450,000		17,013 - 27,221

__________________

1 Subject to customary anti-dilution and other adjustments.

Interest expense related to the Convertible Notes was as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
Amortization of debt discount	$	22,357	$	49	$	—
Contractual interest expense	13,681		29		—
Total interest expense	$	36,038	$	78	$	—

Debt

As of January 31, 2021, $31.0 million was drawn and outstanding under this term loan. As of January 31, 2021, the Company was in compliance with all financial covenants related to the term loan.

The net carrying amount of the term loan was as follows (in thousands):


Principal	$	31,000
Accrued Interest	44
Unamortized loan issuance costs	(71)
Net carrying amount	$	30,973


Term loan, current	$	1,465
Term loan, noncurrent	$	29,508

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Jan. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Standby Letters of Credit As of January 31, 2021 and 2020, the Company had several letters of credit outstanding related to its operating leases totaling $21.7 million and $4.7 million, respectively. The letters of credit expire at various dates between 2021 and 2034 as of January 31, 2021 and between 2021 to 2023 as of January 31, 2020. None and $4.7 million of the standby letters of credit are included in restricted cash, noncurrent as of January 31, 2021 and 2020, respectively. Purchase Commitments In January 2021, the Company entered into a 60-month contract with Amazon Web Services for hosting-related services. Pursuant to the terms of the contract, the Company is required to spend a minimum of $103.5 million over the term of the agreement, including $18.0 million within the first year. As of January 31, 2021, the Company had $103.5 million remaining on the commitment. Capital Commitments During the year ended January 31, 2021, the Company entered into multiple agreements with a construction company related to the build-out of the Company’s new corporate headquarters (see Note 9, “Leases”). The cumulative contract value is $71.1 million, and as of January 31, 2021, $32.3 million remains unpaid under these agreements, of which $9.5 million has been recorded on the Company’s consolidated balance sheet within accounts payable or accrued expenses and other liabilities. Indemnification Agreements The Company has entered into indemnification agreements with its directors and officers that may require the Company to indemnify its directors and officers against any liabilities that may arise by reason of their status or service as directors or officers, other than liabilities arising from willful misconduct of the individual. Additionally, in the ordinary course of business, the Company enters into agreements of varying scope and terms pursuant to which it agrees to indemnify customers, vendors, lessors, business partners, and other parties with respect to certain matters, including, but not limited to, losses arising out of the breach of such agreements, services to be provided by the Company, or from intellectual property infringement claims made by third parties. For the years ended January 31, 2021 and 2020, no demands have been made upon the Company to provide indemnification under such agreements, and there are no claims that the Company is aware of that could have a material adverse effect on its financial position, results of operations, or cash flows. Contingencies From time to time in the normal course of business, the Company may be subject to various claims and other legal matters arising in the ordinary course of business. As of January 31, 2021 and 2020, the Company believes that none of its current legal proceedings would have a material adverse effect on its financial position, results of operations, or cash flows.

Leases

12 Months Ended

Jan. 31, 2021

Leases [Abstract]

Leases

The Company leases real estate facilities under non-cancelable operating leases with various expiration dates through fiscal 2034. The Company has no lease agreements that are classified as finance leases.

Rent expense, net of sublease income under ASC 840 was $5.8 million for the year ended January 31, 2019.

The components of lease costs, lease term, and discount rate for operating leases are as follows:


	Year Ended January 31,
	2021			2020
Operating lease costs (in thousands)	$	25,192		$	8,306
Short-term lease costs (in thousands)	3,464			1,979
Variable lease costs (in thousands)	1,553			122
Total lease costs	$	30,209		$	10,407

Weighted-average remaining lease term (in years)	12.1			2.2
Weighted-average discount rate	9.5		%	3.4		%

Supplemental cash flow information related to operating leases are as follows (in thousands):


	Year Ended January 31,
	2021		2020
Cash paid for amounts included in the measurement of operating lease liabilities	$	12,337	$	8,203
Right-of-use assets obtained in exchange for new operating lease liabilities	$	177,716	$	11,739

Future minimum lease payments (net of tenant improvement receivables) under non-cancelable operating leases with initial lease terms in excess of one year included in the Company’s lease liabilities as of January 31, 2021, are as follows (in thousands):


Year Ending January 31:	Operating Lease Payments
2022	$	10,174
2023	29,331
2024	27,707
2025	27,757
2026 and thereafter	281,347
Total undiscounted operating lease payments	376,316
Less: imputed interest	(171,128)
Total operating lease liabilities	$	205,188

The Company has an operating lease arrangement for office space in San Francisco, which commenced in May 2020 and expires in October 2033. As part of the agreement, the Company was required to issue a $17.0 million letter of credit upon access to the office space, which occurred in the year ended January 31, 2021. The Company participated in the construction of the office space and has incurred construction costs to prepare the office space for its use, which will be partially reimbursed by the landlord. During the year ended January 31, 2021, all three phases of this lease commenced, and as a result, the Company recognized total ROU assets of $175.5 million, with corresponding operating lease liabilities of $173.4 million, on the consolidated balance sheet as of the respective commencement dates of the three phases. The Company expects to incur a total of approximately $404.1 million of future minimum payments and capital commitments, net of tenant improvement receivables as of January 31, 2021, inclusive of $363.7 million of net lease payments included in the future minimum lease payments table above and the remaining capital commitments related to the build-out of the Company’s new corporate headquarters referenced in Note 8. “Commitments and Contingencies”.

Additionally, in April 2020, the Company amended the lease arrangement to include a fee for access to additional shared space, for which future payments total $3.9 million.

Net Loss per Share

12 Months Ended

Jan. 31, 2021

Earnings Per Share [Abstract]

Net Loss per Share

The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data):


	Year Ended January 31,
	2021		2020		2019
Numerator:
Net loss	$	(211,710)	$	(118,589)	$	(50,928)
Denominator:
Weighted-average shares used in calculating net loss per share, basic and diluted	106,344		70,335		65,214
Net loss per share, basic and diluted	$	(1.99)	$	(1.69)	$	(0.78)

The potential shares of common stock that were excluded from the computation of diluted net loss per share for the period presented because including them would have been anti-dilutive are as follows (in thousands):


	Year Ended January 31,
	2021	2020	2019

Redeemable convertible preferred stock	—	73,577	73,547
Stock options	22,340	34,517	33,878
Restricted stock units	8,199	91	—
Early exercised stock options	714	1,393	781
Shares issuable pursuant to the 2020 Employee Stock Purchase Plan	185	—	—
Redeemable convertible preferred stock warrants	—	—	37
Total	31,438	109,578	108,243

Additionally, 17,012,822, 18,051,810, and zero shares of the Company’s Class B common stock underlying the conversion option in the Convertible Notes are not considered in the calculation of diluted net loss per share as the effect would be anti-dilutive for the years ended January 31, 2021, 2020 and 2019.

Stockholders' Deficit

12 Months Ended

Jan. 31, 2021

Share-based Payment Arrangement [Abstract]

Stockholders' Deficit

Stockholders’ Deficit

Common Stock

There are two classes of common stock that total 1,500,000,000 authorized shares: 1,000,000,000 authorized shares of Class A common stock and 500,000,000 authorized shares of Class B common stock. The rights of the holders of Class A common stock and Class B common stock are identical, except with respect to voting and conversion. Each share of Class A common stock is entitled to one vote per share. Each share of Class B common stock is entitled to 10 votes per share and is convertible into one share of Class A common stock. There are 82,688,655 shares of Class A common stock and 78,791,452 shares of class B common stock issued and outstanding as of January 31, 2021. There are 15,498,109 shares of Class A common stock and 61,189,400 shares of Class B common stock issued and outstanding as of January 31, 2020.

Redeemable Convertible Preferred Stock

Prior to the completion of the Direct Listing in September 2020, all shares of redeemable convertible preferred stock then outstanding were converted into 73,577,455 shares of Class B common stock.

The following table summarizes the Company’s redeemable convertible preferred stock as of January 31, 2020 (in thousands, except per share amounts):


	Shares Authorized	Shares issued and Outstanding	Per Share Price at Issuance		Carrying Value		Liquidation Preference
Series 1	1,560	1,560	$	—	$	5	$	—
Series A	20,771	20,771	0.51		10,416		10,512
Series A-1	20,771	—			—		—
Series B	11,000	10,478	2.71		28,404		28,375
Series B-1	11,000	—			—		—
Series C	21,000	20,186	4.27		85,980		86,112
Series C-1	21,000	—			—		—
Series D	15,000	14,353	5.23		74,845		75,000
Series D-1	15,000	—			—		—
Series E	7,000	6,230	8.19		50,931		51,000
Series E-1	7,000	—			—		—
	151,101	73,577			$	250,581	$	250,999

__________________

Note: Certain figures may not sum due to rounding.

Series B Redeemable Convertible Preferred Stock Warrants

In connection with the revision and extension of the Company’s corporate headquarters office lease agreement in November 2012, the Company issued fully exercisable redeemable convertible preferred stock warrants to purchase 36,928 shares of the Company’s Series B redeemable convertible preferred stock at a price of $2.71. The change in fair value of the redeemable convertible preferred stock warrant liability was less than $0.1 million for both years ended January 31, 2020 and 2019.

In November 2019, the redeemable convertible preferred stock warrants were net exercised, under which the number of issuable shares was reduced by the number of shares with an aggregate fair value equal to the exercise price of the warrant, resulting in 6,322 shares surrendered and 30,606 shares of Series B redeemable convertible preferred stock issued. There were no redeemable convertible preferred stock warrants outstanding as of January 31, 2021 or 2020.

Stock Plans

The Company has a 2009 Stock Plan (the “2009 Plan”), a 2012 Stock Plan (the “2012 Plan”), and a 2020 Equity Incentive Plan (“the 2020 Plan”). Each plan was initially established to grant equity awards to employees and consultants of the Company to assist in attracting, retaining, and motivating employees and consultants and to provide incentives to promote the success of the Company’s business.

Options granted under each of the plans may be either incentive stock options (“ISOs”) or nonqualified stock options (“NSOs”). ISOs may be granted only to Company employees (including officers and directors who are also employees). NSOs may be granted to Company employees and consultants. Options under the 2012 Plan and 2020 Plan may be granted for periods of up to 10 years. The exercise price of an ISO and NSO shall not be less than

100% of the estimated fair value of the shares on the date of grant as determined by the Board of Directors. Options granted generally vest over four years and vest at a rate of 25% upon the first anniversary of the vesting commencement date and 1/48 per month thereafter.

The Company has also issued RSUs pursuant to the 2012 Plan and 2020 Plan. RSUs granted vest over four years, and generally vest at either at a predefined rate of 25% upon the first anniversary of the vesting commencement date and continued vesting quarterly thereafter, or even on a quarterly basis over the service period.

Shares of common stock purchased under each of the plans are subject to certain restrictions and repurchase rights, including the right of first refusal by the Company for sale or transfer of shares to outside parties.

Stock Options

Option activity under the Company’s combined stock plans is set forth below (in thousands, except years and per share data):


	Number of Shares	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual (in years)	Aggregate Intrinsic Value




Balances at January 31, 2020	34,517	2.55		7.4	$	362,046
Options granted	17	13.04
Options exercised	(11,012)	1.86
Options cancelled	(1,182)	3.48
Balance as of January 31, 2021	22,340	$	2.85	6.9	$	726,455
Vested and exercisable at January 31, 2021	12,235	$	2.03	6.1	$	407,889
Vested and expected to vest at January 31, 2021	23,054	$	2.89	7.0	$	748,786

The weighted-average grant-date fair value of options granted and the total intrinsic value of options exercised during the periods presented were as follows:


	Year Ended January 31,
	2021		2020		2019

Weighted-average grant-date fair value per share	$	6.77	$	3.24	$	1.23
Aggregate intrinsic value of options exercised (in thousands)	$	238,165	$	41,270	$	6,113

Early Exercise of Employee Options

The 2009 Plan and 2012 Plan allow for the early exercise of stock options. The consideration received for an early exercise of an option is considered to be a deposit of the exercise price, and the related dollar amount is recorded as a liability and reflected in accrued expenses and other current liabilities and other liabilities in the consolidated balance sheets. This liability is reclassified to additional paid-in capital as the awards vest. If a stock option is early exercised, the unvested shares may be repurchased by the Company in case of employment termination at the price paid by the purchaser for such shares. Shares that were subject to repurchase totaled 714,355 and 1,393,024 as of January 31, 2021 and 2020, respectively.

Determination of Fair Values

The assumptions used in the Black-Scholes pricing model for stock-based compensation for options granted in the periods below were as follows:


	Year Ended January 31,
	2021		2020		2019
Risk-free interest rate	1.2	%	1.8% -2.6%		2.8% - 3.1%
Expected term	8 years		8 years		8 years
Dividend yield	—	%	—	%	—	%
Expected volatility	44.6	%	44.8% - 46.3%		41.6% - 46.6%

Restricted Stock Units

The Company’s RSU activity is set forth below (in thousands, except per share data):


	Number of Shares	Weighted- Average Grant Date Fair Value		Aggregate Intrinsic Value


Unvested RSUs at January 31, 2020	91	$	10.10	$	1,186
RSUs granted	8,771	18.83
RSU vested	(402)	15.64
RSU cancelled/forfeited	(261)	15.18
Unvested RSU at January 31, 2021	8,199	19.01		$	289,987
RSUs vested, not yet released	157	13.43

Stock-Based Compensation Expense

Stock-based compensation for stock-based awards to employees and non-employees in the Company’s consolidated statements of operations for the periods below were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019

Cost of revenues	$	305	$	103	$	37
Research and development	18,606		24,869		5,160
Sales and marketing	9,387		10,177		2,108
General and administrative	5,927		13,237		1,242
Total stock-based compensation expense	$	34,225	$	48,386	$	8,547

The stock-based compensation expense related to options granted to non-employees for the years ended January 31, 2021 and 2020 was not material.

Total unrecognized compensation costs related to unvested awards not yet recognized under all equity compensation plans was as follows:


	As of January 31, 2021
	Unrecognized Expense (in thousands)		Weighted-Average Expected Recognition Period (in years)
Stock options	$	24,881	2.3
RSUs	144,622		3.6
Total unrecognized stock-based compensation expense	$	169,503	3.4


	As of January 31, 2020
	Unrecognized Expense (in thousands)		Weighted-Average Expected Recognition Period (in years)
Stock options	$	39,945	3.0
RSUs	884		3.9
Total unrecognized stock-based compensation expense	$	40,829	3.0

Fiscal 2019 Tender Offer

In April 2018, the Board of Directors approved a plan for a private trust, whose sole trustee and grantor is the Company’s founder and CEO, to purchase shares of the Company’s Class A and Class B common stock from certain current and former employees of the Company. The tender offer closed in May 2018, at which time the Company recorded $3.8 million as compensation expense related to the excess of the selling price per share of common stock paid to the Company’s employees and former employees over the fair value of the tendered shares. This amount is included in the total stock-based compensation expense shown in the table above for the year ended January 31, 2019. A total of 1,500,814 shares were tendered in the offer for an aggregate purchase price of $7.1 million.

Fiscal 2020 Tender Offer

In October 2019, certain of the Company’s stockholders conducted a tender offer for shares of the Company’s outstanding Class A and Class B common stock and purchased an aggregate of 4,647,127 shares of the Company’s outstanding Class A and Class B common stock from certain other stockholders at a purchase price of $15.82 per share, for an aggregate purchase price of $73.5 million, resulting in stock-based compensation expense of $38.7 million for the excess of the selling price per share of common stock over the fair value of the tendered shares. This amount is included in the total stock-based compensation expense shown in the table above for the year ended January 31, 2020.

2020 Employee Stock Purchase Plan

In September 2020, the Board of Directors adopted and approved the ESPP, which became effective on the effective date of the Company's registration statement on Form S-1 filed with the SEC in connection with the Direct Listing. The ESPP initially reserved and authorized the issuance of up to a total of 2,000,000 shares of Class A common stock to participating employees.

The initial offering period began September 30, 2020 and will end on September 15, 2022, with purchase dates of March 15, 2021, September 15, 2021, March 15, 2022, and September 15, 2022. The ESPP provides for 24-month offering periods beginning September 16 and March 16 of each year, with each offering period consisting of four six-month purchase periods, except for the initial offering period which began on September 30, 2020 and will end on September 15, 2022. The purchase price of shares of Class A common stock under an offering will be the lesser of: (i) 85% of the fair market value of such shares of Class A common stock on the offering date, and (ii) 85% of the fair market value of such shares of Class A common stock on the applicable purchase date.

Current employees who purchase shares under the ESPP may not sell such shares prior to the first anniversary of such purchase date and such shares will be designated with an applicable resale restriction. As of January 31, 2021, no shares have been purchased under the ESPP.

During the year ended January 31, 2021, the Company recognized $4.2 million of stock-based compensation expense related to ESPP and withheld $4.5 million in contributions from employees. As of January 31, 2021, total unrecognized compensation costs related to the 2020 ESPP was $7.0 million, which will be amortized over a weighted average period of 1.06 years.

The following assumptions were used to calculate the fair value of shares to be granted under the ESPP during the period:


	Year Ended January 31,
	2021
Risk-free interest rate	0.1	%
Expected term	0.5 - 2.0 years
Dividend yield	—	%
Expected volatility	50.8% - 55.3%

Compensation Related Costs, Postemployment Benefits	12 Months Ended
Compensation Related Costs, Postemployment Benefits	Jan. 31, 2021
Postemployment Benefits [Abstract]
Employee Benefit Plans	Employee Benefit PlansIn January 2011, the Company adopted a defined contribution retirement savings plan under Section 401(k) of the Internal Revenue Code. This plan covers all employees within the United States who meet minimum age and service requirements and allows participants to defer a portion of their annual compensation on a pre-tax basis. The Company’s contributions to the plan may be made at the discretion of the Board of Directors. There have been no contributions to the plan by the Company since the inception of the plan as of January 31, 2021. Additionally, the Company engages in required pension plans of respective countries in which operations exist.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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+ Details

Interest Income and Other Income (Expense), Net

12 Months Ended

Jan. 31, 2021

Other Income and Expenses [Abstract]

Interest Income and Other Income (Expense), Net

Interest income and other income (expense), net consist of the following (in thousands):


	Year Ended January 31,
	2021		2020		2019
Interest income	$	956	$	1,755	$	1,290
Unrealized gains (losses) on foreign currency transactions	642		(112)		(2)
Other non-operating expense	(30)		(278)		(175)
	$	1,568	$	1,365	$	1,113

Income Taxes

12 Months Ended

Jan. 31, 2021

Income Tax Disclosure [Abstract]

Income Taxes

The components of the provision for income taxes were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019

Current:
United States	$	—	$	—	$	—
State	73		—		—
Foreign	1,226		245		28
Total current:	$	1,299	$	245	$	28
Deferred:
United States	$	—	$	—	$	—
State	—		—		—
Foreign	234		—		—
Total deferred	234		—		—
Total provision for income taxes	$	1,533	$	245	$	28

The components of income/(loss) before income taxes were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
United States	$	(214,540)	$	(119,302)	$	(51,102)
Foreign	4,363		958		202
Total	$	(210,177)	$	(118,344)	$	(50,900)

The reconciliation between the statutory federal income tax and the Company’s effective tax rates as a percentage of loss before income taxes were as follows:


	Year Ended January 31,
	2021		2020		2019
Federal tax rate	21.0	%	21.0	%	21.0	%

Stock-based compensation expense	16.3		3.8		(0.7)
Change in valuation allowance	(34.0)		(27.6)		(22.8)
Transaction costs	(1.8)		—		—
Research and development credits	1.9		3.1		3.1
Convertible debt interest	(3.6)		—		—
Other	(0.5)		(0.5)		(0.5)
Effective income tax rate	(0.7)	%	(0.2)	%	0.1	%

The major components of deferred tax assets (liabilities) were as follows (in thousands):


	As of January 31,
	2021		2020
Deferred tax assets:
Net operating loss carryforwards	$	152,514	$	78,498
Research and development tax credits	21,704		15,112
Depreciation and amortization	—		1,206
Stock-based compensation	4,622		905
Reserves and accrued expenses	1,181		59
Operating lease liabilities	49,757		4,213
Total deferred tax assets	229,778		99,993
Valuation allowance	(182,573)		(96,149)
Net deferred tax assets	47,205		3,844
Deferred tax liabilities:
Right of use asset	(44,225)		(3,844)
Deferred commissions	(1,970)		—
Depreciation and amortization	(1,245)		—
Total deferred tax liabilities	(47,440)		(3,844)
Net deferred tax liabilities	$	(235)	$	—

The valuation allowance increased by $86.4 million, $39.0 million, and $13.7 million during the years ended January 31, 2021, 2020, and 2019, respectively. The increase in the valuation allowance during the years ended January 31, 2021, 2020, and 2019 was primarily driven by losses and tax credits generated in the United States. As of January 31, 2021, 2020, and 2019, the Company believes it is not more likely than not that the deferred tax assets will be fully realizable and continues to maintain a full valuation allowance against its net deferred tax assets.

As of January 31, 2021, the Company had federal and state net operating loss carryforwards of $622.7 million and $328.8 million, respectively. The federal and state net operating losses, if not used, will begin to expire in 2029. Federal net operating losses generated after January 31, 2018 will carry forward indefinitely.

As of January 31, 2021, the Company has federal and California research and development tax credit carryforwards of $17.5 million and $14.0 million, respectively, to offset future taxable income. The federal research and development tax credits, if not used, will begin to expire in 2030, while the state tax credit carryforwards may be carried forward indefinitely.

The Tax Reform Act of 1986 limits the use of net operating loss and tax credit carryforwards in certain situations where changes occur in the stock ownership of a company. Under Section 382 of the Internal Revenue Code of 1986, as amended, the Company’s ability to utilize net operating loss carryforwards or other tax attributes in any taxable year may be limited if the Company has experienced an “ownership change.” Generally, a Section 382 “ownership change” occurs if one or more stockholders or groups of stockholders who owns at least 5% of a corporation’s stock increases its ownership by more than 50 percentage points over its lowest ownership percentage within a specified testing period. Similar rules may apply under state tax laws. The Company has completed a Section 382 study of transactions in its stock. The study concluded that the Company has experienced ownership changes since inception and that its utilization of net operating loss carryforwards will be subject to annual limitations. However, it is not expected that the annual limitations will result in the expiration of tax attribute carryforwards prior to utilization.

Foreign withholding taxes have not been provided for the cumulative undistributed earnings of the Company’s foreign subsidiaries as of January 31, 2021 due to the Company’s intention to permanently reinvest such earnings.

No liability related to uncertain tax positions is recorded in the financial statements due to the fact the liabilities have been netted against deferred attribute carryovers.

A reconciliation of the beginning and ending amounts of gross unrecognized tax benefits was as follows (in thousands):


	As of January 31,
	2021		2020
Balance at the beginning of the year	$	5,438	$	3,261
Increases - current period tax positions	2,795		2,177
Decreases - prior period tax positions	(370)		—


Balance at the end of the year	$	7,863	$	5,438

The Company’s policy is to include interest and penalties related to unrecognized tax benefits within the Company’s provision for income taxes. The Company had no accrued interest and penalties related to unrecognized tax benefits as of January 31, 2021 or January 31, 2020. As of January 31, 2021, there are no unrecognized tax benefits that, if recognized, would affect the Company’s effective tax rate. The Company does not expect that its uncertain tax positions will materially change in the next 12 months.

The Company files federal and state tax returns in the United States and in various foreign jurisdictions. The Company’s tax years since inception are open to examination by federal and state taxing authorities, and the tax years 2014 and forward remain open in various foreign jurisdictions.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References + Details

Geographic Information

12 Months Ended

Jan. 31, 2021

Segment Reporting [Abstract]

Geographic Information

The following tables set forth revenues and long-lived assets, including operating lease ROU assets, by geographic area for the periods presented below (in thousands):

Revenues


	Year Ended January 31,
	2021		2020		2019
United States	$	131,534	$	84,029	$	46,221
International	95,470		58,577		30,549
	$	227,004	$	142,606	$	76,770

Revenues by geography are based on the billing address of the customer.

Long-Lived Assets


	As of January 31,
	2021		2020
United States	$	252,521	$	23,913
International	4,839		7,005
	$	257,360	$	30,918

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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+ Details

Related Party Transactions	12 Months Ended
Related Party Transactions	Jan. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Related Party TransactionsIn January 2018, the Company entered into a convertible note purchase agreement with an entity affiliated with its CEO. Pursuant to the original terms of this convertible note purchase agreement, the Company had the right to sell convertible promissory notes of the Company having an aggregate principal amount of up to $75 million from time to time until January 19, 2023. In May 2019, the Company amended the convertible note purchase agreement by increasing the available aggregate principal amount to $125 million. The Company has not issued any convertible promissory notes pursuant to this convertible note purchase agreement. Subsequently, in connection with the issuance of the January 2020 Convertible Note described in Note 6, “Convertible Notes—Related Party,” this note agreement was terminated. In January and June 2020, the Company issued Convertible Notes to a trust affiliated with the Company’s CEO. See Note 6, “Convertible Notes—Related Party” for further details. During the year ended January 31, 2020, the Company began leasing certain office facilities from a company affiliated with a Board member of the Company. Rent payments made under these leases totaled $2.2 million and $0.7 million for the years ended January 31, 2021 and 2020, respectively. The affiliated company is also a customer of the Company, and the Company had outstanding receivables from the affiliated company of $0.1 million as of January 31, 2021. The Company did not have an outstanding receivable balance from the affiliated company as of January 31, 2020. The Company has entered into an advertising agreement with a company affiliated with a Board member of the Company. Payments under this agreement totaled of $0.3 million and less than $0.1 million for the years ended January 31, 2021 and 2020, respectively. The Company has entered into various recurring subscription agreements with a company affiliated with a Board member of the Company. The Company recognized revenue of $0.2 million and $0.1 million under these subscription agreements for the years ended January 31, 2021 and 2020, respectively, and had outstanding receivables of $0.4 million and less than $0.1 million as of January 31, 2021 and 2020, respectively. The Company has entered into recurring subscription agreements with a total contract value of $1.2 million for the year ended January 31, 2020, with a company affiliated with a Board member of the Company. The Company recognized revenues of $0.4 million during the year ended January 31, 2020. Subsequent to January 31, 2020, the Board member of the Company was no longer affiliated with this company.

Basis of Presentation and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Jan. 31, 2021

Jan. 31, 2020

Accounting Policies [Abstract]

Principles of Consolidation

Reclassification of Class A and Class B Common Stock, Direct Listing, and Stock-Based Compensation Expense

Reclassification of Class A and Class B Common Stock

Direct Listing

Redeemable Convertible Preferred Stock WarrantsThe Company had redeemable convertible preferred stock warrants exercisable for its Series B redeemable convertible preferred stock, which were classified as liabilities on the Company’s balance sheets. The redeemable convertible preferred stock warrants were subject to remeasurement at each balance sheet date, and any change in fair value was recognized as a component of other income (expense), net. In November 2019, all of the Company’s outstanding redeemable convertible preferred stock warrants were net exercised for 30,606 shares of Series B redeemable convertible preferred stock.

Use of Estimates

Risks and Uncertainties

Revenue Recognition

•identification of the contract, or contracts, with the customer;

•identification of the performance obligations in the contract;

•determination of the transaction price;

•allocation of the transaction price to the performance obligations in the contract; and

•recognition of the revenues when, or as, the Company satisfies a performance obligation.

Research and Development

Advertising Expenses

Advertising ExpensesAdvertising expenses are charged to sales and marketing expense in the consolidated statements of operations as incurred.

Stock‑Based Compensation Expense

Foreign Currency Translations and Transactions

Foreign Currency Translation and Transactions

Segment Information

Segment InformationThe Company’s chief operating decision-maker is its Chief Executive Officer (“CEO”), who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance, and allocating resources. The Company manages its operations and allocates resources as a single operating segment.

Cash, Cash Equivalents, and Restricted Cash

sheets.

Marketable Securities

Marketable Securities and InvestmentsMarketable securities are partially comprised of U.S. government securities, commercial paper, and corporate bonds with an original contractual maturity or a remaining maturity at the time of purchase of greater than three months and no more than 37 months. Marketable securities with a remaining maturity at the time of purchase in excess of 12 months are presented as investments, non-current on the consolidated balance sheets. These marketable securities are classified as available-for-sale securities and are carried at fair value with unrealized gains and losses reported in accumulated other comprehensive income (loss) as a separate component of stockholders’ deficit. Interest receivable on these securities is presented in prepaid expenses and other current assets on the consolidated balance sheets. Realized gains and losses and other-than-temporary impairments, if any, on available-for-sale securities are recognized upon sale and are included in other income (expense), net in the consolidated statements of operations. The cost of securities sold is based on the specific identification method. Marketable securities are reviewed periodically to identify possible other-than-temporary impairments.

Accounts Receivable

Accounts Receivable Accounts receivable are stated at realizable value, net of allowance for doubtful accounts. The Company’s estimate is based on historical collection experience and a review of the current status of accounts receivable.

Concentration of Credit Risk

Fair Value of Financial Instruments

Level 1 Observable inputs such as quoted prices in active markets.

Level 2 Inputs other than the quoted prices in active markets that are observable either directly or indirectly.

Level 3 Unobservable inputs in which there is little or no market data and that are significant to the fair value of the assets or liabilities.

Lease Obligations

Operating leases are included in operating lease ROU assets, operating lease liabilities, current, and operating lease liabilities, noncurrent on the consolidated balance sheets.

Property and Equipment, Net


Asset Type						Life (Years)
Desktop and other computer equipment						2-3
Furniture and fixtures						3
Leasehold improvements						Shorter of lease term or estimated useful life
Capitalized internal-use software						3

Capitalized Internal-Use Software

Impairment of Long-Lived Assets

Income Taxes

The Company’s policy is to include penalties and interest related to income tax matters within the Company’s benefit from (provision for) income taxes.

Redeemable Convertible Preferred Stock Warrants

Reclassification of Class A and Class B Common Stock

Direct Listing

Net Loss Per Share

Recently Issued Accounting Pronouncements Not Yet Adopted and Recently Adopted Accounting Pronouncements

Recently Issued Accounting Pronouncements Not Yet Adopted

Recently Adopted Accounting Pronouncements

Basis of Presentation and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jan. 31, 2021

Accounting Policies [Abstract]

Schedule of Cash and Cash Equivalents

Cash, cash equivalents, and restricted cash as reported in the Company’s consolidated statements of cash flows consist of the following (in thousands):


	As of January 31,
	2021		2020		2019

Cash and cash equivalents	$	259,878	$	306,020	$	23,778
Restricted cash	—		4,657		2,802
Cash, cash equivalents, and restricted cash	$	259,878	$	310,677	$	26,580

Schedule of Property and Equipment, Net


Asset Type						Life (Years)
Desktop and other computer equipment						2-3
Furniture and fixtures						3
Leasehold improvements						Shorter of lease term or estimated useful life
Capitalized internal-use software						3

Property and equipment, net, consisted of the following (in thousands):


	As of January 31,
	2021		2020

Desktop and other computer equipment	$	2,229	$	2,530
Furniture and fixtures	2,012		1,857
Leasehold improvements	13,686		12,047
Capitalized internal-use software	10,498		9,341
Construction in progress	68,409		3,871
Total gross property and equipment	96,834		29,646
Less: Accumulated depreciation and amortization	(22,398)		(19,546)
Total property and equipment, net	$	74,436	$	10,100

Schedule of Restrictions on Cash and Cash Equivalents

Cash, cash equivalents, and restricted cash as reported in the Company’s consolidated statements of cash flows consist of the following (in thousands):


	As of January 31,
	2021		2020		2019

Cash and cash equivalents	$	259,878	$	306,020	$	23,778
Restricted cash	—		4,657		2,802
Cash, cash equivalents, and restricted cash	$	259,878	$	310,677	$	26,580

Revenue (Tables)

12 Months Ended

Jan. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Deferred Contract Acquisition Costs

The following table summarizes the activity of deferred contract acquisition costs (in thousands):


	Year Ended January 31,
	2021		2020

Beginning balance	$	6,107	$	2,071
Capitalization of contract acquisition costs	10,065		5,643
Amortization of deferred contract acquisition costs	(4,079)		(1,607)
Ending balance	$	12,093	$	6,107

Deferred contract acquisition costs, current	$	5,742	$	2,692
Deferred contract acquisition costs, noncurrent	6,351		3,415
Total deferred contract acquisition costs	$	12,093	$	6,107

Fair Value Measurements (Tables)

12 Months Ended

Jan. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis

The following table summarizes, for assets and liabilities measured at fair value, the respective fair value and classification by level of input within the fair value hierarchy (in thousands):


	As of January 31, 2021
	Level 1		Level 2		Level 3		Total
Current Assets
Cash equivalents
Money market funds	$	207,187	$	—	$	—	$	207,187
Commercial paper	—		2,230		—		2,230
Certificates of deposit	—		1,050		—		1,050
Total cash equivalents	$	207,187	$	3,280	$	—	$	210,467
Marketable securities
Commercial paper	$	—	$	43,159	$	—	$	43,159
U.S. treasury bonds	40,245		—		—		40,245
Corporate bonds	—		40,286		—		40,286
Certificate of deposit	—		2,706		—		2,706
Total marketable securities	$	40,245	$	86,151	$	—	$	126,396

Non-current Assets
Corporate bonds	—		19,125		—		19,125
Total assets	$	247,432	$	108,556	$	—	$	355,988


	As of January 31, 2020
	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents
Money market funds	$	610	$	—	$	—	$	610
Total cash equivalents	$	610	$	—	$	—	$	610
Marketable securities
Commercial paper	$	—	$	16,452	$	—	$	16,452
U.S. treasury bonds	17,590		—		—		17,590
Corporate bonds	—		11,246		—		11,246
Total marketable securities	17,590		27,698		—		45,288
Total assets	$	18,200	$	27,698	$	—	$	45,898

Schedule of Warrants or Rights

The following table summarizes the change in the redeemable convertible preferred stock warrant liability (in thousands):


	Amount


Balance as of January 31, 2019	$	94
Adjustment resulting from change in fair value recognized in the consolidated statement of operations	117
Exercise of redeemable convertible preferred stock warrants	(211)
Balance as of January 31, 2020	$	—

Schedule of Debt Securities, Available-for-sale

The following table summarizes the Company's investments in marketable securities on the consolidated balance sheets (in thousands):


	As of January 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Current Assets
Commercial paper	$	43,158	$	2	$	(1)	$	43,159
U.S. treasury bonds	40,236		9		—		40,245
Corporate bonds	40,278		9		(1)		40,286
Certificates of deposit	2,705		1		—		2,706
Total marketable securities	$	126,377	$	21	$	(2)	$	126,396

Non-current Assets
Corporate bonds	19,120		8		(3)		19,125
Total assets	$	145,497	$	29	$	(5)	$	145,521


	As of January 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Commercial paper	$	16,452	$	—	$	—	$	16,452
U.S. treasury bonds	17,571		19		—		17,590
Corporate bonds	11,237		9		—		11,246
Total marketable securities	$	45,260	$	28	$	—	$	45,288

Balance Sheet Components (Tables)

12 Months Ended

Jan. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Property and Equipment, Net


Asset Type						Life (Years)
Desktop and other computer equipment						2-3
Furniture and fixtures						3
Leasehold improvements						Shorter of lease term or estimated useful life
Capitalized internal-use software						3

Property and equipment, net, consisted of the following (in thousands):


	As of January 31,
	2021		2020

Desktop and other computer equipment	$	2,229	$	2,530
Furniture and fixtures	2,012		1,857
Leasehold improvements	13,686		12,047
Capitalized internal-use software	10,498		9,341
Construction in progress	68,409		3,871
Total gross property and equipment	96,834		29,646
Less: Accumulated depreciation and amortization	(22,398)		(19,546)
Total property and equipment, net	$	74,436	$	10,100

Schedule Of Capitalized Software

The changes in the carrying value of capitalized internal-use software costs for the periods presented below are as follows (in thousands):


	Amount



Balance as of February 1, 2019	$	1,041
Capitalization of internal-use software costs	423
Amortization of internal-use software costs	(653)
Balance as of January 31, 2020	811
Capitalization of internal-use software costs	1,157
Amortization of internal-use software costs	(612)
Balance as of January 31, 2021	$	1,356

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):


	As of January 31,
	2021		2020
Prepaid expenses	$	16,696	$	10,479
Deferred contract acquisition costs, current	5,742		2,692
Other current assets	4,857		3,496
Total prepaid expenses and other current assets	$	27,295	$	16,667

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):


	As of January 31,
	2021		2020
Accrued payroll liabilities	10,607		$	3,479
Accrued taxes for fringe benefits	2,963		3,312
Accrued advertising expenses	7,020		1,627
Accrued property and equipment	4,715		484
Accrued consulting expenses	2,393		246
Other liabilities	13,918		9,093
Total accrued expenses and other current liabilities	$	41,616	$	18,241

Convertible Notes—Related Party (Tables)

12 Months Ended

Jan. 31, 2021

Summary of the Carrying Amount of Convertible Debt

The net carrying amount of the Convertible Notes was as follows (in thousands):


	As of January 31, 2021		As of January 31, 2020
Principal	450,000		$	300,000
Unamortized discount	(112,548)		(96,932)
Accrued interest expense	13,709		29
Net carrying amount	$	351,161	$	203,097


	Aggregate Principal Amount		Maturity Date	Range of Shares Potentially Issuable at Maturity(1)	Initial Conversion Price(1)
January 2020 Convertible Note	$	300,000	1/30/2025	11,282 - 18,052	$	31.58
June 2020 Convertible Note	150,000		6/26/2025	5,731 - 9,169	31.09
Total	$	450,000		17,013 - 27,221

__________________

1 Subject to customary anti-dilution and other adjustments.

Interest expense related to the Convertible Notes was as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
Amortization of debt discount	$	22,357	$	49	$	—
Contractual interest expense	13,681		29		—
Total interest expense	$	36,038	$	78	$	—

Debt (Tables)

12 Months Ended

Jan. 31, 2021

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The net carrying amount of the term loan was as follows (in thousands):


Principal	$	31,000
Accrued Interest	44
Unamortized loan issuance costs	(71)
Net carrying amount	$	30,973


Term loan, current	$	1,465
Term loan, noncurrent	$	29,508

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

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+ Details

Leases (Tables)

12 Months Ended

Jan. 31, 2021

Leases [Abstract]

Schedule of Lease Cost

The components of lease costs, lease term, and discount rate for operating leases are as follows:


	Year Ended January 31,
	2021			2020
Operating lease costs (in thousands)	$	25,192		$	8,306
Short-term lease costs (in thousands)	3,464			1,979
Variable lease costs (in thousands)	1,553			122
Total lease costs	$	30,209		$	10,407

Weighted-average remaining lease term (in years)	12.1			2.2
Weighted-average discount rate	9.5		%	3.4		%

Supplemental cash flow information related to operating leases are as follows (in thousands):


	Year Ended January 31,
	2021		2020
Cash paid for amounts included in the measurement of operating lease liabilities	$	12,337	$	8,203
Right-of-use assets obtained in exchange for new operating lease liabilities	$	177,716	$	11,739

Schedule of Operating Lease, Liability, Maturity


Year Ending January 31:	Operating Lease Payments
2022	$	10,174
2023	29,331
2024	27,707
2025	27,757
2026 and thereafter	281,347
Total undiscounted operating lease payments	376,316
Less: imputed interest	(171,128)
Total operating lease liabilities	$	205,188

Net Loss per Share (Tables)

12 Months Ended

Jan. 31, 2021

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Net Loss Per Share

The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data):


	Year Ended January 31,
	2021		2020		2019
Numerator:
Net loss	$	(211,710)	$	(118,589)	$	(50,928)
Denominator:
Weighted-average shares used in calculating net loss per share, basic and diluted	106,344		70,335		65,214
Net loss per share, basic and diluted	$	(1.99)	$	(1.69)	$	(0.78)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share


	Year Ended January 31,
	2021	2020	2019

Redeemable convertible preferred stock	—	73,577	73,547
Stock options	22,340	34,517	33,878
Restricted stock units	8,199	91	—
Early exercised stock options	714	1,393	781
Shares issuable pursuant to the 2020 Employee Stock Purchase Plan	185	—	—
Redeemable convertible preferred stock warrants	—	—	37
Total	31,438	109,578	108,243

Stockholders' Deficit (Tables)

12 Months Ended

Jan. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Preferred Stock

The following table summarizes the Company’s redeemable convertible preferred stock as of January 31, 2020 (in thousands, except per share amounts):


	Shares Authorized	Shares issued and Outstanding	Per Share Price at Issuance		Carrying Value		Liquidation Preference
Series 1	1,560	1,560	$	—	$	5	$	—
Series A	20,771	20,771	0.51		10,416		10,512
Series A-1	20,771	—			—		—
Series B	11,000	10,478	2.71		28,404		28,375
Series B-1	11,000	—			—		—
Series C	21,000	20,186	4.27		85,980		86,112
Series C-1	21,000	—			—		—
Series D	15,000	14,353	5.23		74,845		75,000
Series D-1	15,000	—			—		—
Series E	7,000	6,230	8.19		50,931		51,000
Series E-1	7,000	—			—		—
	151,101	73,577			$	250,581	$	250,999

__________________

Note: Certain figures may not sum due to rounding.

Schedule of Stock Options Activity

Option activity under the Company’s combined stock plans is set forth below (in thousands, except years and per share data):


	Number of Shares	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual (in years)	Aggregate Intrinsic Value




Balances at January 31, 2020	34,517	2.55		7.4	$	362,046
Options granted	17	13.04
Options exercised	(11,012)	1.86
Options cancelled	(1,182)	3.48
Balance as of January 31, 2021	22,340	$	2.85	6.9	$	726,455
Vested and exercisable at January 31, 2021	12,235	$	2.03	6.1	$	407,889
Vested and expected to vest at January 31, 2021	23,054	$	2.89	7.0	$	748,786

Summary of Weighted-Average Grant-Date Fair Value of Options Granted and Total Intrinsic Value of Options Exercised

The weighted-average grant-date fair value of options granted and the total intrinsic value of options exercised during the periods presented were as follows:


	Year Ended January 31,
	2021		2020		2019

Weighted-average grant-date fair value per share	$	6.77	$	3.24	$	1.23
Aggregate intrinsic value of options exercised (in thousands)	$	238,165	$	41,270	$	6,113

Schedule Assumptions used in the Black-Scholes Pricing Model for Stock-based Compensation

The assumptions used in the Black-Scholes pricing model for stock-based compensation for options granted in the periods below were as follows:


	Year Ended January 31,
	2021		2020		2019
Risk-free interest rate	1.2	%	1.8% -2.6%		2.8% - 3.1%
Expected term	8 years		8 years		8 years
Dividend yield	—	%	—	%	—	%
Expected volatility	44.6	%	44.8% - 46.3%		41.6% - 46.6%

Schedule of RSU Activity

The Company’s RSU activity is set forth below (in thousands, except per share data):


	Number of Shares	Weighted- Average Grant Date Fair Value		Aggregate Intrinsic Value


Unvested RSUs at January 31, 2020	91	$	10.10	$	1,186
RSUs granted	8,771	18.83
RSU vested	(402)	15.64
RSU cancelled/forfeited	(261)	15.18
Unvested RSU at January 31, 2021	8,199	19.01		$	289,987
RSUs vested, not yet released	157	13.43

Schedule of Stock-Based Compensation Expense

Stock-based compensation for stock-based awards to employees and non-employees in the Company’s consolidated statements of operations for the periods below were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019

Cost of revenues	$	305	$	103	$	37
Research and development	18,606		24,869		5,160
Sales and marketing	9,387		10,177		2,108
General and administrative	5,927		13,237		1,242
Total stock-based compensation expense	$	34,225	$	48,386	$	8,547

Summary of Unrecognized Compensation Costs, Related to Unvested Awards

Total unrecognized compensation costs related to unvested awards not yet recognized under all equity compensation plans was as follows:


	As of January 31, 2021
	Unrecognized Expense (in thousands)		Weighted-Average Expected Recognition Period (in years)
Stock options	$	24,881	2.3
RSUs	144,622		3.6
Total unrecognized stock-based compensation expense	$	169,503	3.4


	As of January 31, 2020
	Unrecognized Expense (in thousands)		Weighted-Average Expected Recognition Period (in years)
Stock options	$	39,945	3.0
RSUs	884		3.9
Total unrecognized stock-based compensation expense	$	40,829	3.0

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions

The following assumptions were used to calculate the fair value of shares to be granted under the ESPP during the period:


	Year Ended January 31,
	2021
Risk-free interest rate	0.1	%
Expected term	0.5 - 2.0 years
Dividend yield	—	%
Expected volatility	50.8% - 55.3%

- Definition

Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding.

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+ Details

Interest Income and Other Income (Expense), Net (Tables)

12 Months Ended

Jan. 31, 2021

Other Income and Expenses [Abstract]

Schedule of Interest and Other Income (Expense), Net

Interest income and other income (expense), net consist of the following (in thousands):


	Year Ended January 31,
	2021		2020		2019
Interest income	$	956	$	1,755	$	1,290
Unrealized gains (losses) on foreign currency transactions	642		(112)		(2)
Other non-operating expense	(30)		(278)		(175)
	$	1,568	$	1,365	$	1,113

Income Taxes (Tables)

12 Months Ended

Jan. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of Components of the Provision for Income Taxes

The components of the provision for income taxes were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019

Current:
United States	$	—	$	—	$	—
State	73		—		—
Foreign	1,226		245		28
Total current:	$	1,299	$	245	$	28
Deferred:
United States	$	—	$	—	$	—
State	—		—		—
Foreign	234		—		—
Total deferred	234		—		—
Total provision for income taxes	$	1,533	$	245	$	28

Schedule of Income before Income Taxes

The components of income/(loss) before income taxes were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
United States	$	(214,540)	$	(119,302)	$	(51,102)
Foreign	4,363		958		202
Total	$	(210,177)	$	(118,344)	$	(50,900)

Schedule of Reconciliation of Effective Tax Rates

The reconciliation between the statutory federal income tax and the Company’s effective tax rates as a percentage of loss before income taxes were as follows:


	Year Ended January 31,
	2021		2020		2019
Federal tax rate	21.0	%	21.0	%	21.0	%

Stock-based compensation expense	16.3		3.8		(0.7)
Change in valuation allowance	(34.0)		(27.6)		(22.8)
Transaction costs	(1.8)		—		—
Research and development credits	1.9		3.1		3.1
Convertible debt interest	(3.6)		—		—
Other	(0.5)		(0.5)		(0.5)
Effective income tax rate	(0.7)	%	(0.2)	%	0.1	%

Schedule of Major Components of Deferred Tax Assets and Liabilities

The major components of deferred tax assets (liabilities) were as follows (in thousands):


	As of January 31,
	2021		2020
Deferred tax assets:
Net operating loss carryforwards	$	152,514	$	78,498
Research and development tax credits	21,704		15,112
Depreciation and amortization	—		1,206
Stock-based compensation	4,622		905
Reserves and accrued expenses	1,181		59
Operating lease liabilities	49,757		4,213
Total deferred tax assets	229,778		99,993
Valuation allowance	(182,573)		(96,149)
Net deferred tax assets	47,205		3,844
Deferred tax liabilities:
Right of use asset	(44,225)		(3,844)
Deferred commissions	(1,970)		—
Depreciation and amortization	(1,245)		—
Total deferred tax liabilities	(47,440)		(3,844)
Net deferred tax liabilities	$	(235)	$	—

Schedule of Gross Unrecognized Tax Benefits Roll Forward

A reconciliation of the beginning and ending amounts of gross unrecognized tax benefits was as follows (in thousands):


	As of January 31,
	2021		2020
Balance at the beginning of the year	$	5,438	$	3,261
Increases - current period tax positions	2,795		2,177
Decreases - prior period tax positions	(370)		—


Balance at the end of the year	$	7,863	$	5,438

Geographic Information (Tables)

12 Months Ended

Jan. 31, 2021

Segment Reporting [Abstract]

Revenue by Geographic Areas

Revenues


	Year Ended January 31,
	2021		2020		2019
United States	$	131,534	$	84,029	$	46,221
International	95,470		58,577		30,549
	$	227,004	$	142,606	$	76,770

Long-lived Assets by Geographic Areas

Long-Lived Assets


	As of January 31,
	2021		2020
United States	$	252,521	$	23,913
International	4,839		7,005
	$	257,360	$	30,918

Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) - USD ($)		12 Months Ended
	Sep. 30, 2020	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019	Nov. 30, 2019
Debt Securities, Available-for-sale [Line Items]
Professional fees		$ 18,000,000.0
Issuance of redeemable convertible preferred stock upon net exercise (in shares)	73,577,455
Advertising expense		68,000,000.0	$ 39,000,000.0	$ 19,900,000
Restricted cash		0	4,657,000	2,802,000
Marketable securities, impairment loss		0	0	0
Allowance for doubtful accounts		600,000	100,000
Impairment of long-lived assets		$ 0	$ 0	$ 0
Customer One \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Debt Securities, Available-for-sale [Line Items]
Concentration risk, percentage		13.00%
Series B Redeemable Convertible Preferred Stock
Debt Securities, Available-for-sale [Line Items]
Preferred stock, shares issued (in shares)					30,606
Minimum
Debt Securities, Available-for-sale [Line Items]
Marketable securities, term		3 months
Maximum
Debt Securities, Available-for-sale [Line Items]
Marketable securities, term		37 months

Basis of Presentation and Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) - USD ($)	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
Accounting Policies [Abstract]
Cash and cash equivalents	$ 259,878,000	$ 306,020,000	$ 23,778,000
Restricted cash	0	4,657,000	2,802,000
Total cash, cash equivalents, and restricted cash	$ 259,878,000	$ 310,677,000	$ 26,580,000	$ 46,125,000

Basis of Presentation and Summary of Significant Accounting Policies - Property And Equipment (Details)	12 Months Ended
	Jan. 31, 2021
Desktop and other computer equipment \| Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	2 years
Desktop and other computer equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	3 years
Capitalized internal-use software
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	3 years

Basis of Presentation and Summary of Significant Accounting Policies - Recently Adopted Accounting Policies (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020	Feb. 01, 2019
Accounting Policies [Abstract]
Operating lease right-of-use assets	$ 182,924	$ 20,818	$ 16,500
Total operating lease liabilities	$ 205,188		$ 18,300

Revenue - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Revenue - Narrative (Details) - USD ($) $ in Millions	Jan. 31, 2021	Jan. 31, 2020
Revenue from Contract with Customer [Abstract]
Deferred revenue	$ 105.9	$ 64.1
Deferred revenue, non-current	2.0	1.4
Deferred revenue recognized	$ 62.7	$ 31.8
Deferred contract acquisition costs, amortization period	3 years

Revenue - Performance Obligations (Details) $ in Millions	Jan. 31, 2021 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 122.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-02-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Percentage	89.00%

Revenue - Deferred Contract Acquisition Costs Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2021	Jan. 31, 2020
Capitalized Contract Costs [Roll Forward]
Beginning balance	$ 6,107	$ 2,071
Capitalization of contract acquisition costs	10,065	5,643
Amortization of deferred contract acquisition costs	(4,079)	(1,607)	$ (322)
Ending balance	12,093	6,107	2,071
Deferred contract acquisition costs, current				$ 5,742	$ 2,692
Deferred contract acquisition costs, noncurrent				6,351	3,415
Total deferred contract acquisition costs	$ 12,093	$ 2,071	$ 2,071	$ 12,093	$ 6,107

Fair Value Measurements - Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 210,467	$ 610
Marketable securities	126,396	45,288
Total assets	355,988	45,898
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	207,187	610
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	2,230
Marketable securities	43,159	16,452
U.S. treasury bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	40,245	17,590
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	40,286	11,246
Corporate bonds	19,125
Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	1,050
Marketable securities	2,706
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	207,187	610
Marketable securities	40,245	17,590
Total assets	247,432	18,200
Level 1 \| Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	207,187	610
Level 1 \| Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0
Marketable securities	0	0
Level 1 \| U.S. treasury bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	40,245	17,590
Level 1 \| Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Corporate bonds	0
Level 1 \| Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0
Marketable securities	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	3,280	0
Marketable securities	86,151	27,698
Total assets	108,556	27,698
Level 2 \| Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Level 2 \| Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	2,230
Marketable securities	43,159	16,452
Level 2 \| U.S. treasury bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Level 2 \| Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	40,286	11,246
Corporate bonds	19,125
Level 2 \| Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	1,050
Marketable securities	2,706
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Marketable securities	0	0
Total assets	0	0
Level 3 \| Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Level 3 \| Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0
Marketable securities	0	0
Level 3 \| U.S. treasury bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Level 3 \| Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	$ 0
Corporate bonds	0
Level 3 \| Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0
Marketable securities	$ 0

Fair Value Measurements - Redeemable Convertible Preferred Stock Warrant Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Redeemable Convertible Preferred Stock Warrant Liability [Roll Forward]
Beginning balance	$ 0	$ 94
Adjustment resulting from change in fair value recognized in the consolidated statement of operations		117
Exercise of redeemable convertible preferred stock warrants	$ 0	(211)	$ 0
Ending balance		$ 0	$ 94

Fair Value Measurements - Investments (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Current assets
Amortized Cost	$ 126,377	$ 45,260
Gross Unrealized Gains	21	28
Gross Unrealized Losses	(2)	0
Estimated Fair Value	126,396	45,288
Non-current Assets
Total assets, amortized cost	145,497
Total assets, gross unrealized gains	29
Total assets, gross unrealized loss	(5)
Total assets, estimated estimated fair value	145,521
Commercial paper
Current assets
Amortized Cost	43,158	16,452
Gross Unrealized Gains	2	0
Gross Unrealized Losses	(1)	0
Estimated Fair Value	43,159	16,452
U.S. treasury bonds
Current assets
Amortized Cost	40,236	17,571
Gross Unrealized Gains	9	19
Gross Unrealized Losses	0	0
Estimated Fair Value	40,245	17,590
Corporate bonds
Current assets
Amortized Cost	40,278	11,237
Gross Unrealized Gains	9	9
Gross Unrealized Losses	(1)	0
Estimated Fair Value	40,286	$ 11,246
Non-current Assets
Amortized Cost	19,120
Gross Unrealized Gains	8
Gross Unrealized Losses	(3)
Estimated Fair Value	19,125
Certificates of deposit
Current assets
Amortized Cost	2,705
Gross Unrealized Gains	1
Gross Unrealized Losses	0
Estimated Fair Value	$ 2,706

Fair Value Measurements - Narrative (Details) - Fair Value - USD ($) $ in Millions	Jan. 31, 2021	Jun. 26, 2020	Jan. 30, 2020
January 2020 Convertible Note
Debt Instrument [Line Items]
Convertible debt, fair value disclosures	$ 399.1		$ 203.0
June 2020 Convertible Note
Debt Instrument [Line Items]
Convertible debt, fair value disclosures	$ 202.7	$ 112.0

Balance Sheet Components - Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Property, Plant and Equipment [Line Items]
Total gross property and equipment	$ 96,834	$ 29,646
Less: Accumulated depreciation and amortization	(22,398)	(19,546)
Total property and equipment, net	74,436	10,100
Depreciation and amortization	3,500	2,200	$ 4,200
Desktop and other computer equipment
Property, Plant and Equipment [Line Items]
Total gross property and equipment	2,229	2,530
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total gross property and equipment	2,012	1,857
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total gross property and equipment	13,686	12,047
Capitalized internal-use software
Property, Plant and Equipment [Line Items]
Total gross property and equipment	10,498	9,341
Construction in progress
Property, Plant and Equipment [Line Items]
Total gross property and equipment	$ 68,409	$ 3,871

Balance Sheet Components - Capitalized Software Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Movement in Capitalized Computer Software, Net [Roll Forward]
Beginning balance	$ 811	$ 1,041
Capitalization of internal-use software costs	1,157	423
Amortization of internal-use software costs	(612)	(653)
Ending balance	$ 1,356	$ 811

Balance Sheet Components - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepaid expenses	$ 16,696	$ 10,479
Deferred contract acquisition costs, current	5,742	2,692
Other current assets	4,857	3,496
Total prepaid expenses and other current assets	$ 27,295	$ 16,667

Balance Sheet Components - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued payroll liabilities	$ 10,607	$ 3,479
Accrued taxes for fringe benefits	2,963	3,312
Accrued advertising expenses	7,020	1,627
Accrued property and equipment	4,715	484
Accrued consulting expenses	2,393	246
Other liabilities	13,918	9,093
Total accrued expenses and other current liabilities	$ 41,616	$ 18,241

Convertible Notes—Related Party - Narrative (Details) - USD ($)	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jun. 30, 2020	Apr. 30, 2020
Related Party Transaction [Line Items]
Additional paid-in capital	$ 528,616,000	$ 184,522,000
Deemed capital contribution on issuance of convertible note—related party	37,973,000	96,981,000
Convertible Debt
Related Party Transaction [Line Items]
Long-term debt	$ 351,161,000	$ 203,097,000
January 2020 Convertible Note \| Convertible Debt
Related Party Transaction [Line Items]
Convertible notes, interest rate, stated percentage		3.50%
Long-term debt, face amount		$ 300,000,000
Initial conversion price (in dollars per share)	$ 31.58
Additional paid-in capital	$ 97,000,000.0
June 2020 Convertible Note \| Convertible Debt
Related Party Transaction [Line Items]
Convertible notes, interest rate, stated percentage			3.50%
Long-term debt, face amount			$ 150,000,000
Initial conversion price (in dollars per share)	$ 31.09
January 2020 Convertible Note Settlement Amount \| Convertible Debt
Related Party Transaction [Line Items]
Long-term debt	$ 356,300,000
Debt conversion, converted instrument, shares issued	31.6649
Initial conversion price (in dollars per share)	$ 31.58
January 2020 Convertible Note Settlement Amount \| Convertible Debt \| Maximum
Related Party Transaction [Line Items]
Initial conversion price (in dollars per share)	$ 50.6638
Term Loan Agreement \| Secured Debt
Related Party Transaction [Line Items]
Long-term debt, face amount				$ 40,000,000.0
Long-term debt	$ 30,973,000
June 2020 Convertible Note Settlement Amount \| Convertible Debt
Related Party Transaction [Line Items]
Long-term debt	$ 178,200,000
Debt conversion, converted instrument, shares issued	32.1658
Initial conversion price (in dollars per share)	$ 31.09
Deemed capital contribution on issuance of convertible note—related party	$ 38,000,000.0
June 2020 Convertible Note Settlement Amount \| Convertible Debt \| Maximum
Related Party Transaction [Line Items]
Initial conversion price (in dollars per share)	$ 51.4653

Convertible Notes—Related Party - Net Carrying Amount of Convertible Notes (Details) - Convertible Debt - USD ($) $ / shares in Units, shares in Thousands	Jan. 31, 2021	Jan. 31, 2020
Related Party Transaction [Line Items]
Principal	$ 450,000,000	$ 300,000,000
Unamortized discount	(112,548,000)	(96,932,000)
Accrued interest expense	13,709,000	29,000
Net carrying amount	$ 351,161,000	$ 203,097,000
Minimum
Related Party Transaction [Line Items]
Range of shares potentially issuable at maturity (in shares)	17,013
Maximum
Related Party Transaction [Line Items]
Range of shares potentially issuable at maturity (in shares)	27,221
January 2020 Convertible Note
Related Party Transaction [Line Items]
Principal	$ 300,000,000
Initial conversion price (in dollars per share)	$ 31.58
January 2020 Convertible Note \| Minimum
Related Party Transaction [Line Items]
Range of shares potentially issuable at maturity (in shares)	11,282
January 2020 Convertible Note \| Maximum
Related Party Transaction [Line Items]
Range of shares potentially issuable at maturity (in shares)	18,052
June 2020 Convertible Note
Related Party Transaction [Line Items]
Principal	$ 150,000,000
Initial conversion price (in dollars per share)	$ 31.09
June 2020 Convertible Note \| Minimum
Related Party Transaction [Line Items]
Range of shares potentially issuable at maturity (in shares)	5,731
June 2020 Convertible Note \| Maximum
Related Party Transaction [Line Items]
Range of shares potentially issuable at maturity (in shares)	9,169

Convertible Notes—Related Party - Interest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Related Party Transaction [Line Items]
Amortization of debt discount	$ 22,369	$ 49	$ 0
Convertible Notes
Related Party Transaction [Line Items]
Amortization of debt discount	22,357	49	0
Contractual interest expense	13,681	29	0
Total interest expense	$ 36,038	$ 78	$ 0

Debt - Narrative (Details) - USD ($)	1 Months Ended
Debt - Narrative (Details) - USD ($)	Apr. 30, 2020	Jan. 31, 2021
Line of Credit Facility [Line Items]
Debt covenant, cash balance requirement		$ 60,000,000
Unrestricted Cash Balance, Lower Tier
Line of Credit Facility [Line Items]
Debt covenant, cash balance requirement		80,000,000.0
Unrestricted Cash Balance, Top Tier
Line of Credit Facility [Line Items]
Debt covenant, cash balance requirement		100,000,000.0
Minimum \| Unrestricted Cash Balance, Mid Tier
Line of Credit Facility [Line Items]
Debt covenant, cash balance requirement		80,000,000.0
Maximum \| Unrestricted Cash Balance, Mid Tier
Line of Credit Facility [Line Items]
Debt covenant, cash balance requirement		100,000,000.0
Secured Debt \| Term Loan Agreement
Line of Credit Facility [Line Items]
Long-term debt, term	5 years
Long-term debt, face amount	$ 40,000,000.0
Principal		$ 31,000,000
Secured Debt \| Term Loan Agreement \| Prime Rate \| Unrestricted Cash Balance, Lower Tier
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0.00%
Secured Debt \| Term Loan Agreement \| Prime Rate \| Unrestricted Cash Balance, Mid Tier
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	(0.50%)
Secured Debt \| Term Loan Agreement \| Prime Rate \| Unrestricted Cash Balance, Top Tier
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	(1.00%)

Debt - Net Carrying Amount of Term Loan (Details) - Secured Debt - Term Loan Agreement $ in Thousands	Jan. 31, 2021 USD ($)
Debt Instrument [Line Items]
Principal	$ 31,000
Accrued interest expense	44
Unamortized loan issuance costs	(71)
Net carrying amount	30,973
Term loan, current	1,465
Term loan, noncurrent	$ 29,508

Commitments and Contingencies (Details) - USD ($)	1 Months Ended
Commitments and Contingencies (Details) - USD ($)	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Letters of credit outstanding, amount	$ 21,700,000
Restricted cash	$ 0	$ 4,657,000	$ 2,802,000
Long-term purchase commitment, period	60 months
Purchase obligation	$ 103,500,000
Purchase obligation, to be paid, year one	18,000,000.0
Purchase commitment remaining	103,500,000
Contractual obligation	71,100,000
Unbilled contractual obligation	32,300,000
Contractual obligation recognized in period	$ 9,500,000

Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Leases - Narrative (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2021	Apr. 30, 2020	Jan. 31, 2020	Feb. 01, 2019
Line of Credit Facility [Line Items]
Rent expense, net of rental income	$ 5,800
Letters of credit outstanding, amount		$ 21,700
Operating lease right-of-use assets		182,924		$ 20,818	$ 16,500
Total operating lease liabilities		205,188			$ 18,300
Lessee, operating lease, fees, undiscounted amount			$ 3,900
San Francisco
Line of Credit Facility [Line Items]
Letters of credit outstanding, amount		17,000
Operating lease right-of-use assets		175,500
Total operating lease liabilities		173,400
Lessee, operating lease, future minimum payments net of tenant improvements receivable		404,100
Lessee, operating lease, lease not yet commenced, undiscounted amount		$ 363,700

Leases - Components of Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Leases [Abstract]
Operating lease costs (in thousands)	$ 25,192	$ 8,306
Short-term lease costs (in thousands)	3,464	1,979
Variable lease costs (in thousands)	1,553	122
Total lease costs	$ 30,209	$ 10,407
Weighted-average remaining lease term (in years)	12 years 1 month 6 days	2 years 2 months 12 days
Weighted-average discount rate	9.50%	3.40%
Cash paid for amounts included in the measurement of operating lease liabilities	$ 12,337	$ 8,203
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 177,716	$ 11,739

Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Feb. 01, 2019
Leases [Abstract]
2022	$ 10,174
2023	29,331
2024	27,707
2025	27,757
2026 and thereafter	281,347
Total undiscounted operating lease payments	376,316
Less: imputed interest	(171,128)
Total operating lease liabilities	$ 205,188	$ 18,300

Net Loss per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Numerator:
Net loss	$ (211,710)	$ (118,589)	$ (50,928)
Denominator:
Weighted-average shares used in calculating net loss per share, basic and diluted (in shares)	106,344	70,335	65,214
Net loss per share, basic and diluted (in dollars per share)	$ (1.99)	$ (1.69)	$ (0.78)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Net Loss per Share - Antidilutive Securities (Details) - shares	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	31,438,000	109,578,000	108,243,000
Redeemable convertible preferred stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	0	73,577,000	73,547,000
Stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	22,340,000	34,517,000	33,878,000
Restricted stock units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	8,199,000	91,000	0
Early exercised stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	714,355	1,393,024	781,000
Shares issuable pursuant to the 2020 Employee Stock Purchase Plan
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	185,000	0	0
Redeemable convertible preferred stock warrants
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	0	0	37,000
Common Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	17,012,822	18,051,810	0

Stockholders' Deficit - Summary of Redeemable Convertible Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)	0	151,101,000
Temporary equity, shares outstanding (in shares)	0	73,577,000
Carrying Value	$ 0	$ 250,581
Liquidation Preference		$ 250,999
Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		151,101,000
Temporary equity, shares issued (in shares)		73,577,000
Temporary equity, shares outstanding (in shares)	0	73,577,000	73,547,000	67,317,000
Carrying Value	$ 0	$ 250,581	$ 250,370	$ 199,364
Liquidation Preference		$ 250,999
Series 1 \| Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		1,560,000
Temporary equity, shares issued (in shares)		1,560,000
Temporary equity, shares outstanding (in shares)		1,560,000
Temporary equity, price per share (in dollars per share)		$ 0
Carrying Value		$ 5
Liquidation Preference		$ 0
Series A \| Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		20,771,000
Temporary equity, shares issued (in shares)		20,771,000
Temporary equity, shares outstanding (in shares)		20,771,000
Temporary equity, price per share (in dollars per share)		$ 0.51
Carrying Value		$ 10,416
Liquidation Preference		$ 10,512
Series A-1 \| Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		20,771,000
Temporary equity, shares issued (in shares)		0
Temporary equity, shares outstanding (in shares)		0
Carrying Value		$ 0
Liquidation Preference		$ 0
Series B \| Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		11,000,000
Temporary equity, shares issued (in shares)		10,478,000
Temporary equity, shares outstanding (in shares)		10,478,000
Temporary equity, price per share (in dollars per share)		$ 2.71
Carrying Value		$ 28,404
Liquidation Preference		$ 28,375
Series B-1 \| Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		11,000,000
Temporary equity, shares issued (in shares)		0
Temporary equity, shares outstanding (in shares)		0
Carrying Value		$ 0
Liquidation Preference		$ 0
Series C \| Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		21,000,000
Temporary equity, shares issued (in shares)		20,186,000
Temporary equity, shares outstanding (in shares)		20,186,000
Temporary equity, price per share (in dollars per share)		$ 4.27
Carrying Value		$ 85,980
Liquidation Preference		$ 86,112
Series C-1 \| Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		21,000,000
Temporary equity, shares issued (in shares)		0
Temporary equity, shares outstanding (in shares)		0
Carrying Value		$ 0
Liquidation Preference		$ 0
Series D \| Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		15,000,000
Temporary equity, shares issued (in shares)		14,353,000
Temporary equity, shares outstanding (in shares)		14,353,000
Temporary equity, price per share (in dollars per share)		$ 5.23
Carrying Value		$ 74,845
Liquidation Preference		$ 75,000
Series D-1 \| Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		15,000,000
Temporary equity, shares issued (in shares)		0
Temporary equity, shares outstanding (in shares)		0
Carrying Value		$ 0
Liquidation Preference		$ 0
Series E \| Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		7,000,000
Temporary equity, shares issued (in shares)		6,230,000
Temporary equity, shares outstanding (in shares)		6,230,000
Temporary equity, price per share (in dollars per share)		$ 8.19
Carrying Value		$ 50,931
Liquidation Preference		$ 51,000
Series E-1 \| Redeemable convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Temporary equity, shares authorized (in shares)		7,000,000
Temporary equity, shares issued (in shares)		0
Temporary equity, shares outstanding (in shares)		0
Carrying Value		$ 0
Liquidation Preference		$ 0

Stockholders' Deficit - Narrative (Details) $ / shares in Units, $ in Thousands		1 Months Ended			12 Months Ended
	Sep. 30, 2020 shares	Nov. 30, 2019 shares	Oct. 31, 2019 USD ($) $ / shares shares	May 31, 2018 USD ($) shares	Jan. 31, 2021 USD ($) vote shares	Jan. 31, 2020 USD ($) shares	Jan. 31, 2019 USD ($)	Nov. 30, 2012 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares)					1,500,000,000
Issuance of redeemable convertible preferred stock upon net exercise (in shares)	73,577,455
Adjustment resulting from change in fair value recognized in the consolidated statement of operations \| $						$ 117
Compensation expense \| $			$ 38,700	$ 3,800
Repurchases of common stock (in shares)			4,647,127	1,500,814
Repurchases of common stock \| $			$ 73,500	$ 7,100	$ 33	77	$ 14
Share price (in dollars per share) \| $ / shares			$ 15.82
Total stock-based compensation expense \| $					34,225	48,386	8,547
Employee contributions withheld \| $					4,500
Unrecognized expense \| $					$ 169,503	$ 40,829
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, expiration period					10 years
Exercise price, minimum threshold, as a 100% of estimated fair value on the date of grant					100.00%
Vesting period					4 years
Stock options \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					25.00%
Stock options \| Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					2.08%
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					4 years
Vesting percentage					25.00%
Shares issuable pursuant to the 2020 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares reserved for future issuance (in shares)	2,000,000
Total stock-based compensation expense \| $					$ 4,200
Unrecognized expense \| $					$ 7,000
Unrecognized expense, period for recognition					1 year 21 days
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares)					1,000,000,000
Conversion of stock, shares converted (in shares)					1
Common stock, shares issued (in shares)					82,688,655	15,498,109
Common stock, shares outstanding (in shares)					82,688,655	15,498,109
Common Class A \| Shares issuable pursuant to the 2020 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock, percent	85.00%
Common Class B
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares)					500,000,000
Number of votes per share \| vote					10
Common stock, shares issued (in shares)					78,791,452	61,189,400
Common stock, shares outstanding (in shares)					78,791,452	61,189,400
Redeemable convertible preferred stock warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares called by warrants (in shares)								36,928
Exercise price of shares called by warrants (in dollars per share) \| $ / shares								$ 2.71
Adjustment resulting from change in fair value recognized in the consolidated statement of operations \| $						$ 100	$ 100
Shares forfeited (in shares)		6,322
Shares issued (in shares)		30,606
Warrants outstanding (in shares)					0	0

Stockholders' Deficit - Schedule of Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Number of Shares
Beginning balance (in shares)	34,517
Options granted (in shares)	17
Options exercised (in shares)	(11,012)
Options canceled (in shares)	(1,182)
Ending balance (in shares)	22,340	34,517
Vested and exercisable, end of period (in shares)	12,235
Vested and expected to vest, end of period (in shares)	23,054
Weighted- Average Exercise Price
Beginning balance (in dollars per share)	$ 2.55
Options granted (in dollars per share)	13.04
Options exercised (in dollars per share)	1.86
Options canceled (in dollars per share)	3.48
Ending balance (in dollars per share)	2.85	$ 2.55
Vested and exercisable, end of period (in dollars per share)	2.03
Vested and expected to vest, end of period (in dollars per share)	$ 2.89
Weighted average remaining contractual term	6 years 10 months 24 days	7 years 4 months 24 days
Weighted average remaining contractual term, vested and exercisable	6 years 1 month 6 days
Weighted average remaining contractual term, vested and expected to vest	7 years
Aggregate intrinsic value, outstanding	$ 726,455	$ 362,046
Aggregate intrinsic value, vested and exercisable	407,889
Aggregate intrinsic value, vested and expected to vest	$ 748,786
Weighted-average grant-date fair value per share (in dollars per share)	$ 6.77	$ 3.24	$ 1.23
Aggregate intrinsic value of options exercised (in thousands)	$ 238,165	$ 41,270	$ 6,113

Stockholders' Deficit - Fair Value Assumptions (Details)	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	1.20%
Expected term	8 years	8 years	8 years
Dividend yield	0.00%	0.00%	0.00%
Expected volatility	44.60%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		1.80%	2.80%
Expected volatility		44.80%	41.60%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		2.60%	3.10%
Expected volatility		46.30%	46.60%

Stockholders' Deficit - Schedule of RSU Activity (Details) - Restricted stock units - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Number of Shares
Beginning balance (in shares)	91
RSUs granted (in shares)	8,771
RSUs vested (in shares)	(402)
RSUs cancelled/forfeited (in shares)	(261)
Ending balance (in shares)	8,199
RSUs vested, not released (in shares)	157
Weighted- Average Grant Date Fair Value
Beginning balance (in dollars per share)	$ 10,100
RSUs granted (in dollars per share)	18.83
RSUs vested, and released (in dollars per share)	15.64
RSUs cancelled/forfeited (in dollars per share)	15.18
Ending balance (in dollars per share)	19.01
RSUs vested, not released (in dollars per share)	$ 13.43
Aggregate intrinsic value	$ 289,987	$ 1,186

Stockholders' Deficit - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 34,225	$ 48,386	$ 8,547
Unrecognized expense, stock options	24,881	39,945
Unrecognized expense, RSUs	144,622	884
Unrecognized expense	$ 169,503	$ 40,829
Weighted-average expected recognition period	3 years 4 months 24 days	3 years
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average expected recognition period	2 years 3 months 18 days	3 years
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average expected recognition period	3 years 7 months 6 days	3 years 10 months 24 days
Cost of revenues
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 305	$ 103	37
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	18,606	24,869	5,160
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	9,387	10,177	2,108
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 5,927	$ 13,237	$ 1,242

Stockholders' Deficit - ESPP Fair Value Assumptions (Details)	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	1.20%
Dividend yield	0.00%	0.00%	0.00%
Expected term	8 years	8 years	8 years
Expected volatility	44.60%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		1.80%	2.80%
Expected volatility		44.80%	41.60%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		2.60%	3.10%
Expected volatility		46.30%	46.60%
Shares issuable pursuant to the 2020 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.10%
Dividend yield	0.00%
Shares issuable pursuant to the 2020 Employee Stock Purchase Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term	6 months
Expected volatility	50.80%
Shares issuable pursuant to the 2020 Employee Stock Purchase Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term	2 years
Expected volatility	55.30%

Employee Benefit Plans- Narrative (Details)	12 Months Ended
Employee Benefit Plans- Narrative (Details)	Jan. 31, 2021 USD ($)
Postemployment Benefits [Abstract]
Defined contribution plan, employer discretionary contribution amount	$ 0

Interest Income and Other Income (Expense), Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Other Income and Expenses [Abstract]
Interest income	$ 956	$ 1,755	$ 1,290
Unrealized gains (losses) on foreign currency transactions	642	(112)	(2)
Other non-operating expense	(30)	(278)	(175)
Interest income and other income (expense), net	$ 1,568	$ 1,365	$ 1,113

Income Taxes - Components of Income and Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Current:
United States	$ 0	$ 0	$ 0
State	73	0	0
Foreign	1,226	245	28
Total current:	1,299	245	28
Deferred:
United States	0	0	0
State	0	0	0
Foreign	234	0	0
Total deferred	234	0	0
Total provision for income taxes	$ 1,533	$ 245	$ 28

Income Taxes - Components of Income (Loss) Before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ (214,540)	$ (119,302)	$ (51,102)
Foreign	4,363	958	202
Loss before provision for income taxes	$ (210,177)	$ (118,344)	$ (50,900)

Income Taxes - Reconciliation of Effective Tax Rates (Details)	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Income Tax Disclosure [Abstract]
Federal tax rate	21.00%	21.00%	21.00%
Stock-based compensation expense	16.30%	3.80%	(0.70%)
Change in valuation allowance	(34.00%)	(27.60%)	(22.80%)
Transaction costs	(1.80%)	0.00%	0.00%
Research and development credits	1.90%	3.10%	3.10%
Convertible debt interest	(3.60%)	0.00%	0.00%
Other	(0.50%)	(0.50%)	(0.50%)
Effective income tax rate	(0.70%)	(0.20%)	0.10%

Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Deferred tax assets:
Net operating loss carryforwards	$ 152,514	$ 78,498
Research and development tax credits	21,704	15,112
Depreciation and amortization	0	1,206
Stock-based compensation	4,622	905
Reserves and accrued expenses	1,181	59
Operating lease liabilities	49,757	4,213
Total deferred tax assets	229,778	99,993
Valuation allowance	(182,573)	(96,149)
Net deferred tax assets	47,205	3,844
Deferred tax liabilities:
Right of use asset	(44,225)	(3,844)
Deferred commissions	(1,970)	0
Depreciation and amortization	(1,245)	0
Total deferred tax liabilities	(47,440)	(3,844)
Net deferred tax liabilities	$ (235)	$ 0

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Income Tax Contingency [Line Items]
Valuation allowance increase (decrease)	$ 86,400	$ 39,000	$ 13,700
Research and development tax credits	21,704	$ 15,112
Domestic Tax Authority
Income Tax Contingency [Line Items]
Operating loss carryforwards	622,700
Research and development tax credits	17,500
State and Local Jurisdiction
Income Tax Contingency [Line Items]
Operating loss carryforwards	328,800
Research and development tax credits	$ 14,000

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 5,438	$ 3,261
Increases - current period tax positions	2,795	2,177
Decreases - prior period tax positions	(370)	0
Ending balance	$ 7,863	$ 5,438

Geographic Information (Details) - USD ($) $ in Thousands	12 Months Ended
Geographic Information (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 227,004	$ 142,606	$ 76,770
Long-lived assets	257,360	30,918
United States
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	131,534	84,029	46,221
Long-lived assets	252,521	23,913
International
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	95,470	58,577	$ 30,549
Long-lived assets	$ 4,839	$ 7,005

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

+ Details

Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	May 31, 2019	Jan. 31, 2018
Related Party Transaction [Line Items]
Deferred revenue	$ 105.9	$ 64.1
Deferred revenue recognized	62.7	31.8
Affiliated Entity
Related Party Transaction [Line Items]
Notes receivable related parties, amount authorized			$ 125.0	$ 75.0
Deferred revenue		1.2
Deferred revenue recognized		0.4
Accounts Receivable, Related Parties	0.1	0.0
Revenue from related parties	0.2	0.1
Affiliated Entity \| Lease Expense
Related Party Transaction [Line Items]
Amount of related party transactions	2.2	0.7
Affiliated Entity \| Advertising Expense
Related Party Transaction [Line Items]
Amount of related party transactions	0.3	0.1
Affiliated Entity \| Various Recurring Subscription Agreements
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties	$ 0.4	$ 0.1