REVENUE, DEFERRED REVENUE, AND REMAINING PERFORMANCE OBLIGATIONS

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

REVENUE, DEFERRED REVENUE, AND REMAINING PERFORMANCE OBLIGATIONS

REVENUE, DEFERRED REVENUE, AND REMAINING PERFORMANCE OBLIGATIONS

Disaggregation of Revenue

The following table sets forth the Company's sources of revenue (in thousands): 

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
Subscription revenue	$	177,217	$	132,562	$	321,638	$	263,818
Professional services revenue	7,141		9,298		12,856		18,159
Total revenue	$	184,358	$	141,860	$	334,494	$	281,977

Revenue by geographic region, which is generally based on the address of the Company's customers as defined in their master subscription agreements, is set forth below (in thousands):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
United States	$	119,385	$	92,681	$	217,303	$	183,278
All other countries	64,973		49,179		117,191		98,699
Total revenue	$	184,358	$	141,860	$	334,494	$	281,977

Deferred Revenue

The Company recognized $138.6 million and $126.0 million of revenue during the three months ended June 30, 2020 and 2019, respectively, that was included in the deferred revenue balances as of March 31, 2020 and 2019, respectively. The Company recognized $243.2 million and $221.5 million of revenue during the six months ended June 30, 2020 and 2019, respectively, that was included in the deferred revenue balances as of December 31, 2019 and 2018, respectively.

Transaction Price Allocated to Remaining Performance Obligations

As of June 30, 2020, approximately $1.101 billion of revenue is expected to be recognized from remaining performance obligations. This amount mainly comprises subscription revenue, with no material amounts attributable to professional services and other revenue. The Company expects to recognize revenue on approximately 70% of these remaining performance obligations over the next 18 months, with the balance recognized thereafter.

The estimated revenues from the remaining performance obligations do not include uncommitted contract amounts such as (i) amounts which are cancellable by the customer without significant penalty, (ii) future billings for time and material contracts, and (iii) amounts associated with optional renewal periods.