CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Revenue:
Total revenue	$ 873,782	$ 590,380	$ 421,720
Cost of revenue:
Total cost of revenue	259,492	177,076	125,356
Gross profit	614,290	413,304	296,364
Operating expenses:
Sales and marketing	471,890	325,100	223,893
Research and development	308,820	205,161	149,033
General and administrative	122,944	92,347	71,304
Total operating expenses	903,654	622,608	444,230
Loss from operations	(289,364)	(209,304)	(147,866)
Other income (expense):
Interest income	926	4,569	8,556
Interest expense	(11,316)	(56,107)	(20,983)
Other expense, net	(3,135)	(1,851)	(15,885)
Loss before provision for (benefit from) income taxes	(302,889)	(262,693)	(176,178)
Provision for (benefit from) income taxes	3,977	4,251	(656)
Net loss	$ (306,866)	$ (266,944)	$ (175,522)
Net loss per share, basic and diluted (in dollars per share)	$ (4.75)	$ (4.53)	$ (3.14)
Weighted-average shares used to compute net loss per share, basic and diluted (in shares)	64,563,032	58,984,604	55,939,032
Subscription
Revenue:
Total revenue	$ 842,047	$ 565,349	$ 399,826
Cost of revenue:
Total cost of revenue	217,901	145,280	101,691
Services
Revenue:
Total revenue	31,735	25,031	21,894
Cost of revenue:
Total cost of revenue	$ 41,591	$ 31,796	$ 23,665