ISVs and Technology 26% Banking and Finance 26% Travel and Consumer 22% Information and Media 14% Emerging Verticals 10% Company 1993 founded, US-based, public (NYSE:EPAM) Geographic Focus North America Europe 52% 48% Services Software development Application testing Maintenance and support Infrastructure services 67% 20% 8% 3% Headcount 10,000+ IT Professionals Mature Process Leader in R&D, over 100 ISV clients SAS Type II, ISAE 300 security Own project delivery mgmt platform

MarchAprilMayJuneQ3Y13Q4Y13 UC market research & analysis Short list Decision Negotiation Decision Negotiation Compile long option list Full scale solution rollout Pilots for shortlisted solutions

Video Conferencing Video Conferencing 5 5 Voice Mail 2 2 Audio Conferencing 7 7 Web Conferencing 7 7 Instant Messaging (IM) 4 4 * Field staff communication tool usage survey (about 200 people) Authentication Administration Integration Compliance Authentication Administration Integration Compliance and Calendaring and Calendaring 1 1

Many or few times per dayCurrent number of tools After Lync deployment 96,9% Instant Messaging 42 91,8% Voice calls 1:1 55,8% Voice conferencing 72 20,8% Video calls 1:1 5,8% Video conferencing 52 Lync can provide HD video for everyone without room booking. 53,9% Screen sharing and Web conferencing 72 24% Voice Mail % 11 Lync as a primary tool for all types of communication Skype as a secondary tool for smooth transformation.

UsabilityQualitySecurityMobility CostManageabilityFuture vision

geographically separated locations: Belarus and USA Two Lync pools initial small pilot group expanded to 500 users Good user adoption IM/presence, voice, video, conferencing, enterprise voice, federation All Lync features enabled possibility to call existing internal extensions Integration with Asterisk VoIP network Lync support workflow established with enterprise service desk User support and training

Unified client for all types of business communications Great user acceptance due to the ease of use Deep integration with existing Microsoft infrastructure in EPAM – MS Office, Exchange, Sharepoint, SCOM Lower cost, lower TCO External connectivity - calls to Skype, Lync contacts in other companies, public telephone network Integration with Polycom VCS equipment Adaptive to network QoS, built-in tools to measure voice, video, screen sharing quality

Siarhei Harbukou Project Manager