Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Revenue:
Revenues	$ 115,525	$ 95,670	$ 228,216	$ 189,289
Total revenue	115,525	95,670	228,216	189,289
Cost of revenue:
Total cost of revenue	41,172	34,883	80,735	67,478
Gross profit	74,353	60,787	147,481	121,811
Operating expenses:
Research and development	27,790	22,693	60,169	42,309
Sales and marketing	51,942	46,470	103,957	80,085
General and administrative	29,137	30,076	50,635	39,914
Total operating expenses	108,869	99,239	214,761	162,308
Loss from operations	(34,516)	(38,452)	(67,280)	(40,497)
Interest income and other income (expense), net	(448)	431	(273)	573
Loss before provision for income taxes	(34,964)	(38,021)	(67,553)	(39,924)
Provision for income taxes	234	263	174	919
Net loss	$ (35,198)	$ (38,284)	$ (67,727)	$ (40,843)
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share)	$ (0.25)	$ (0.87)	$ (0.49)	$ (1.10)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted (in shares)	142,479	43,986	139,272	37,248
Subscription
Revenue:
Revenues	$ 92,831	$ 74,547	$ 181,823	$ 146,259
Cost of revenue:
Total cost of revenue	19,130	14,699	36,474	28,160
Professional services
Revenue:
Revenues	22,694	21,123	46,393	43,030
Cost of revenue:
Total cost of revenue	$ 22,042	$ 20,184	$ 44,261	$ 39,318