Balance Sheet Components - Property and Equipment (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 255,548	$ 185,742
Less: Accumulated depreciation and amortization	(88,534)	(49,664)
Property and equipment, net	167,014	136,078
Data center and other computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	146,220	87,166
Capitalized internal-use software and website development
Property, Plant and Equipment [Line Items]
Property and equipment, gross	44,358	30,354
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19,733	13,157
Purchased software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,211	2,604
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,498	4,835
Construction in process
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 35,528	$ 47,626

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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