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Geographic Information (Tables)
 12 Months Ended
Dec. 31, 2018
Segment Reporting [Abstract]  
Revenue by region Revenue by region, based on the address of the end user as specified in our subscription, license or service agreements, was as follows:
 
Year Ended December 31,
(in thousands)
2018
 
2017
 
2016
Americas
$
191,204

 
$
138,876

 
$
92,377

Europe, Middle East and Africa
53,839

 
34,121

 
22,211

Asia Pacific
22,317

 
14,730

 
9,783

Revenue
$
267,360

 
$
187,727

 
$
124,371
Property and equipment, net by geographic area Our property and equipment, net by geographic area is summarized as follows:
 
December 31,
(in thousands)
2018
 
2017
United States
$
6,487

 
$
6,581

International
4,861

 
4,173

Property and equipment, net
$
11,348

 
$
10,754