SEGMENT INFORMATION The Company determines its business segments and reports segment information in accordance with how the Companys chief operating decision maker (CODM) organizes the segments to evaluate performance, allocate resources and make business decisions. Segment results are based on the segments revenues and operating profit, where segment operating profit is defined as income from operations before unallocated costs. Expenses included in segment operating profit consist principally of direct selling and delivery costs as well as an allocation of certain shared services expenses. Certain expenses not directly attributable to or controllable at the segment level are not allocated to specific segments. Further, stock based compensation expense is not allocated to individual segments in internal management reports used by the CODM. These unallocated amounts are combined with total segment operating profit to arrive at consolidated income from operations as reported below in the reconciliation of segment operating profit to consolidated income before provision for income taxes. The Company manages its business primarily based on the managerial responsibility for its client base. As managerial responsibility for a particular client relationship generally correlates with the clients geographic location, there is a high degree of similarity between client locations and the geographic boundaries of the Companys reportable segments. In some cases, managerial responsibility for a particular client is assigned to a management team in another region and is usually based on the strength of the relationship between client executives and particular members of EPAMs senior management team. In such cases, the clients activity would be reported through that management teams reportable segment. The Companys reportable segments are North America, Europe, Russia and Other. The revenues in the Other segment represented less than 1% of total segment revenues in 2015 due to the ending of certain customer relationsh