Balance Sheet Components - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 23,701	$ 19,617
Accumulated depreciation and amortization	(11,062)	(7,248)
Property and equipment, net	12,639	12,369
Leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property and equipment	12,767	12,257
Computers and equipment
Property, Plant and Equipment [Line Items]
Gross property and equipment	6,562	4,431
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Gross property and equipment	3,017	2,540
Capitalized internal-use software
Property, Plant and Equipment [Line Items]
Gross property and equipment	1,355	389
Construction-in-progress
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 500	$ 5,100

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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