Property and Equipment, Net

12 Months Ended

Jan. 31, 2021

Property, Plant and Equipment [Abstract]

Property and equipment consisted of the following:


	January 31,
(in thousands)	2021		2020
Computer and network equipment	$	102,163	$	66,937
Software, including capitalized software development costs	56,858		33,373
Furniture and office equipment	21,682		16,752
Leasehold improvements	79,892		59,564
	260,595		176,626
Less: Accumulated depreciation	(121,029)		(81,228)
	139,566		95,398
Work in progress	25,473		32,895
	$	165,039	$	128,293

Depreciation and amortization expenses associated with property and equipment was $45.5 million, $32.5 million and $24.9 million in the years ended January 31, 2021, 2020 and 2019. This included amortization expense related to capitalized internally-developed software costs of $6.2 million, $4.1 million and $2.8 million in the respective years.

We capitalized $29.3 million, $17.1 million and $7.6 million of internally developed software costs, including $7.2 million, $4.1 million and $1.9 million of capitalized stock-based compensation in the years ended January 31, 2021, 2020 and 2019.