Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
CASH FLOW FROM OPERATING ACTIVITIES:
Net loss	$ (130,797)	$ (49,576)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	3,637	1,298
Amortization of deferred contract acquisition costs	9,087	4,758
Non-cash operating lease costs	1,408	1,855
Stock-based compensation expense	34,830	5,239
Other	105	206
Changes in operating assets and liabilities, net of effects of acquisition
Accounts receivable	(10,339)	8,696
Prepaid expenses and other current assets	(11,190)	(248)
Deferred contract acquisition costs	(16,477)	(6,749)
Accounts payable	(5,108)	643
Accrued liabilities	6,559	419
Accrued payroll and benefits	6,864	124
Operating lease liabilities	(1,919)	(1,955)
Deferred revenue	37,707	9,783
Other liabilities	2,842	0
Net cash used in operating activities	(72,791)	(25,507)
CASH FLOW FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(1,685)	(401)
Purchases of intangible assets	0	(126)
Capitalization of internal-use software	(2,852)	(1,292)
Cash paid for acquisition, net of cash and restricted cash acquired	(3,449)	0
Net cash used in investing activities	(7,986)	(1,819)
CASH FLOW FROM FINANCING ACTIVITIES:
Proceeds from issuance of Series E redeemable convertible preferred stock, net of issuance costs	0	152,539
Payments of deferred offering costs	(5,068)	0
Proceeds from revolving line of credit	0	19,857
Repayment of term loan	(20,000)	(20,000)
Proceeds from exercise of stock options	5,827	900
Proceeds from initial public offering and private placement, net of underwriting discounts and commissions	1,388,563	0
Net cash provided by financing activities	1,369,322	153,296
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	1,146	8
NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	1,289,691	125,978
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH–Beginning of period	399,112	47,680
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH–End of period	1,688,803	173,658
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest paid	403	836
Income taxes paid, net	74	0
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Stock-based compensation capitalized as internal-use software	2,882	19
Property and equipment purchased but not yet paid	93	493
Vesting of early exercised options	544	29
Deferred offering costs accrued but not yet paid	2,535	0
Issuance of common stock and assumed equity awards in connection with acquisition	120,319	0
Conversion of redeemable convertible preferred stock to common stock upon initial public offering	$ 621,139	$ 0