Note 10. 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 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 years ended December 31, 2017, 2016 and 2015 as determined based on the billing address of the customer (in thousands):


	Years Ended December 31,
	2017		2016		2015

Americas	$	135,289	$	120,306	$	101,192
EMEA		43,661		33,800		22,296
APAC		9,569		6,463		5,763
	$	188,519	$	160,569	$	129,251

Revenue attributed to the United States was approximately 99% of Americas revenue for the years ended December 31, 2017, 2016 and 2015, respectively.

Long-lived Assets

The following table sets forth the Company’s long-lived assets, net of accumulated depreciation, by geographic areas as of December 31, 2017 and 2016 (in thousands):

	December 31,
	2017		2016

Americas	$	8,502	$	10,894
EMEA		1,648		1,523
APAC		287		410
	$	10,437	$	12,827