Geographical Information

12 Months Ended

Dec. 31, 2018

11. Geographical Information

Revenue by geography is generally based on the billing address of the customer. For purposes of its geographic revenue disclosure, the Company defines a customer as an organization. An organization may consist of an individual paying user, multiple paying users within an organization or the organization itself. The following table sets forth the percentage of revenue by geographic area:

	Year Ended December 31,
	2018			2017			2016
United States		64	%		65	%		64	%
Rest of world		36	%		35	%		36	%

No other country outside of the United States comprised 10% or greater of the Company’s revenue for each of the years ended December 31, 2018, 2017 and 2016.

As of December 31, 2018 and 2017, the following table summarizes the percentage of the Company’s long-lived assets by geographic area:

	Property and equipment, net						Intangible assets, net
	December 31, 2018			December 31, 2017			December 31, 2018			December 31, 2017
United States		94	%		99	%		82	%		82	%
Canada		5	%	*			*			*
Ireland	*			*				18	%		18	%
Rest of world		1	%		1	%		—	%		—	%

*	less than 1%