CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Income Statement [Abstract]
Revenue	$ 874,332	$ 770,770	$ 696,264
Cost of revenue	249,484	224,738	215,577
Gross profit	624,848	546,032	480,687
Operating expenses:
Research and development	218,523	201,262	199,750
Sales and marketing	298,635	275,742	317,615
General and administrative	135,316	106,670	102,794
Total operating expenses	652,474	583,674	620,159
Loss from operations	(27,626)	(37,642)	(139,472)
Interest and other expense, net	(9,838)	(4,584)	(3,466)
Loss before provision for income taxes	(37,464)	(42,226)	(142,938)
Provision for income taxes	3,995	1,207	1,410
Net loss	(41,459)	(43,433)	(144,348)
Dividend on series A convertible preferred stock	(10,911)
Accretion of series A convertible preferred stock	(1,508)
Net loss attributable to common stockholders	$ (53,878)	$ (43,433)	$ (144,348)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.35)	$ (0.28)	$ (0.98)
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted	155,598	155,849	147,762