Segment and Major Customers Information Disaggregation of revenue by geography We conduct business globally and are primarily managed on a geographic basis. Our Chief Executive Officer, who is our chief operating decision maker, reviews financial information presented on a consolidated basis accompanied by information about revenue by geographic region for purposes of allocating resources and evaluating financial performance. We define our regions into United States ("U.S."), Europe, the Middle East, and Africa ("EMEA"), Asia Pacific and Japan ("APAC"), and all remaining geographies (primarily Latin America and Canada) included in Others. There are no segment managers who are held accountable for operations, operating results, and plans for levels, components, or types of products or services below the consolidated unit level. Accordingly, we are considered to be in a single reportable segment and operating unit structure. Revenue by geographic region based on the billing address is as follows (in thousands): Three Months Ended June 30, 2019 2018 2019 2018 2019 2018 2019 2018 U.S. EMEA APAC Other Product and related subscription and support $ 67,312 $ 75,104 $ 23,950 $ 21,393 $ 21,309 $ 20,787 $ 4,918 $ 5,107 Platform, cloud subscription and managed services 38,539 30,394 8,704 6,462 6,537 5,410 2,832 2,771 Professional services 29,117 22,887 7,134 4,275 3,944 4,078 3,312 4,028 Total revenue $ 134,968 $ 128,385 $ 39,788 $ 32,130 $ 31,790 $ 30,275 $ 11,062 $ 11,906 Six Months Ended June 30, 2019 2018 2019 2018 2019 2018 2019 2018 U.S. EMEA APAC Other Product and related subscription and support $ 136,891 $ 148,732 $ 45,902 $ 43,318 $ 43,120 $ 40,535 $ 10,026 $ 10,899 Platform, cloud subscription and managed services 72,518 60,249 17,061 13,107 12,923 10,819 5,564 5,242 Professional services 56,857 45,352 12,759 9,723 7,318 6,576 7,213 7,214 Total revenue $ 266,266 $ 254,333 $ 75,722 $ 66,148 $ 63,361 $ 57,930 $ 22,803 $ 23,355 We generate revenue from sales of our network, email and endpoint security solutions, network forensics appliances, cloud threat intelligence and analytics subscriptions, managed security, our Mandiant professional services, our Helix security operations platform, and our Verodin security instrumentation platform. We disaggregate our revenue into two main categories: (i) product, subscription, and support and (ii) professional services. Within the product, subscription and support category, we provide supplemental data to distinguish between solutions that are appliances dependent, and solutions and managed services that are not dependent on appliances. These solutions include security delivered entirely through the cloud or delivered through hybrid on premise/cloud platform. Security solutions that are dependent on appliances are included in the product and related subscription and support sub-category, and solutions and managed services without dependency on the appliances are included in the platform, cloud subscription and managed services sub-category. To complement our product, subscription and support solutions, we offer professional services, including incident response and other security consulting services, to our customers who have experienced a cyber security breach or desire assistance assessing the resilience of their information systems infrastructure. The majority of our professional services are offered on a time and materials basis, through a fixed fee arrangement, or on a retainer basis. Revenue from professional services is recognized as services are delivered. Revenue from our Expertise-on-Demand micro-services and some pre-paid professional services is deferred, and revenue is recognized when services are delivered. The following table depicts the disaggregation of revenue according to revenue type and is consistent with how we evaluate our financial performance (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Product and related subscription and support $ 117,490 $ 122,392 $ 235,938 $ 243,484 Platform, cloud subscription and managed services 56,612 45,037 108,067 89,418 Professional services 43,506 35,267 84,147 68,864 Total revenue $ 217,608 $ 202,696 $ 428,152 $ 401,766 Long lived assets by geography Long lived assets by geographic region based on physical location is as follows (in thousands): As of June 30, 2019 As of December 31, 2018 Property and Equipment, net: United States $ 86,366 $ 80,313 International 9,510 8,850 Total property and equipment, net $ 95,876 $ 89,163 For the three months ended June 30, 2019 and 2018 , one distributor represented 13% and 20% , respectively, and one reseller represented 14% and 15% , respectively, of our total revenue. For the six months ended June 30, 2019 and 2018 , one distributor represented 15% and 20% , respectively, and one reseller represented 14% and 15% , respectively, of our total revenue. As of June 30, 2019 and December 31, 2018 , no customer represented 10% or more of our net accounts receivable balance for either period.