Note 13. Segments

The Company operates its business as one operating segment. Its chief operating decision makers, or CODMs, are its Chief Executive Officer and Chief Financial Officer. The CODMs review separate revenue information for the Company’s subscription and professional services revenue, and all other financial information, including free cash flow, presented on a consolidated basis, for purposes of making operating decisions, assessing financial performance and allocating resources.

Revenue

The following table sets forth the Company’s total revenue by geographic area for the three and nine months ended September 30, 2018 and 2017, as determined based on the billing address of the customer (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017

Americas	$	41,891	$	33,541	$	119,765	$	98,080
EMEA		14,302		10,928		43,049		31,470
APAC		3,030		2,527		9,524		6,602
	$	59,223	$	46,996	$	172,338	$	136,152

Revenue attributed to the United States was approximately 98% and 99% of Americas revenue for the three months ended September 30, 2018 and 2017, respectively, and 98% and 99% for the nine months ended September 30, 2018 and 2017, respectively.