The Company’s revenue for the three months ended April 30, 2019 and 2018 are presented in accordance with the provisions under Topic 606. The Company derives its revenue from two sources:

Subscription and Services Revenue is derived primarily from recurring subscription fees related to service plans such as Ooma Business, Ooma Residential and other communications services.

Product and Other Revenue is generated from the sale of on-premise appliances and end-point devices, including shipping and handling fees for direct customers, and to a lesser extent from porting fees that enable customers to transfer their existing phone numbers. The Company recognizes revenue from sales to direct end-customers and channel partners at the point in time that control transfers which is typically when the Company delivers the product or when all customer contractual provisions have been met, if any. Refer to the Company’s Annual Report for additional information regarding its revenue recognition policy.

Revenue disaggregated by revenue source consisted of the following (in thousands):

	Three Months Ended
	April 30, 2019		April 30, 2018
Subscription and services revenue	$	31,112	$	27,312
Product and other revenue		2,895		2,910
Total revenue	$	34,007	$	30,222

The Company derived approximately 64% and 71% of its total revenue from Ooma Residential and approximately 33% and 26% from Ooma Business for the three months ended April 30, 2019 and 2018, respectively. No individual country outside of the United States represented 10% or more of total revenue for the periods presented. No single customer accounted for 10% or more of total revenue for the periods presented.

As of April 30, 2019 and January 31, 2019, one customer accounted for 15% of the Company’s net accounts receivable balance. No other customers accounted for 10% or more of net accounts receivable for the periods presented.

Deferred Revenue. Deferred revenue primarily consists of billings or payments received in advance of meeting revenue recognition criteria. Deferred services revenue is recognized on a ratable basis over the term of the contract as the services are provided. For all arrangements, any revenue that has been deferred and is expected to be recognized beyond one year is classified in long term liabilities on the condensed consolidated balance sheets.

	As of
	April 30, 2019		January 31, 2019
Subscription and services	$	15,234	$	15,682
Product and other		87		68
Total deferred revenue		15,321		15,750
Less: current deferred revenue		15,049		15,443
Non-current deferred revenue included in other long-term liabilities	$	272	$	307

During the three months ended April 30, 2019, the Company recognized revenue of approximately $8.4 million pertaining to amounts deferred as of January 31, 2019. As of April 30, 2019, the Company’s deferred revenue balance was primarily composed of subscription contracts that were invoiced during the first quarter of fiscal 2020, as well as amounts recorded during fiscal 2019 for annual contracts.

Remaining Performance Obligations. As of April 30, 2019, revenue of approximately $0.3 million is expected to be recognized from remaining performance obligations for open contracts with an original expected length of more than one year. This amount includes both long-term deferred revenue and non-cancelable contract amounts that will be invoiced and recognized as revenue in future periods. The Company expects to recognize revenue of approximately $0.1 million over the next 12 months and the remainder thereafter.