Alex Lewis, principal consultant and CISSP at Convergent Computing, has been working with Office Communications Server for nearly five years. An industry recognized expert, he has been a Microsoft MVP for Live Communications Server since 2006. For more than 15 years, he has been authoring and contributing to books on advanced Microsoft technologies. He speaks frequently on Unified Communications, messaging, and security. Andrew Abbate, MCSE/MCSA, a specialist in Microsoft enterprise and security technologies, and has extensive experience with IT best practices in companies ranging from 20 to 20,000 employees.