As one of the world's largest software companies, Microsoft depends on its IT infrastructure to enable and facilitate communications and collaboration between employees, customers, vendors, and partners. Their challenges are they need to enables Lync mobility for buildings 30 and 31 at Microsoft's headquarters in Washington, Provide high-reliability pervasive Wi-Fi to increase collaboration and productivity and secure voice and video over wireless support. They chose Aruba Networks to overcome these challenges. They have implemented Aruba 6000 chassis, Aruba M3 controller, Aruba AP-135 802.11n access points and Aruba policy enforcement firewall. The results of implementing the Aruba Networks were seamless mobility for the Lync development team and executive management, High density client support with 3 multimedia devices per user, Toll-quality voice and network access for 600 users.