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Revenue (Tables)
 9 Months Ended
Sep. 30, 2019
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue
The following table summarizes the revenue by region based on the billing address of customers who have contracted to use the Company’s global cloud platform:

Three Months Ended September 30Nine Months Ended September 30,
2019201820192018
(in thousands)
AmountPercentage
of Revenue		AmountPercentage
of Revenue		AmountPercentage
of Revenue		AmountPercentage
of Revenue
United States$37,605  51 %$23,914  48 %$101,571  50 %$64,874  47 %
Europe, Middle East, and Africa
17,652  24 %12,648  25 %48,275  24 %35,375  26 %
Asia Pacific13,993  19 %10,223  20 %39,782  20 %27,989  20 %
Other4,691  6 %3,285  7 %13,464  6 %8,937  7 %
Total$73,941  100 %$50,070  100 %$203,092  100 %$137,175  100 %
The following table summarizes the revenue from contracts by type of customer:
Three Months Ended September 30Nine Months Ended September 30,
2019201820192018
(in thousands)
AmountPercentage
of Revenue		AmountPercentage
of Revenue		AmountPercentage
of Revenue		AmountPercentage
of Revenue
Channel partners
$6,554  9 %$3,367  7 %$18,413  9 %$9,085  7 %
Direct customers
67,387  91 %46,703  93 %184,679  91 %128,090  93 %
Total$73,941  100 %$50,070  100 %$203,092  100 %$137,175  100 %
Summary of Deferred Contract Acquisition Costs
The following table summarizes the activity of the deferred contract acquisition costs:
Three Months Ended September 30,Nine Months Ended September 30,
2019201820192018
(in thousands)
Beginning balance$19,482  $13,033  $15,940  $10,765  
Capitalization of contract acquisition costs
4,477  3,233  12,923  8,639  
Amortization of deferred contract acquisition costs
(2,818) (1,852) (7,722) (4,990) 
Ending balance$21,141  $14,414  $21,141  $14,414