Yousef Khalidi is a seasoned technologist with a proven record of over 24 years’ experience shipping innovative software and hardware platforms. Yousef is currently a Distinguished Engineer at Microsoft, working on Windows Azure, Microsoft’s large-scale cloud system. Yousef was a member of the team that conceived and built the initial version of Microsoft Azure. Yousef is currently concentrating on Azure networking, including network virtualization, software-defined networks, and hybrid networks. Before joining Microsoft, Yousef was a Distinguished Engineer at Sun Microsystems. At Sun, he held several R&D, architecture, and management positions including CTO and Chief Architect of Solaris, Chief Architect of Sun's N1 initiative, Chief Architect of the Sun Cluster product line, and as the principal architect of the Solaris MC and the Spring advanced development projects. He has worked on and published papers in several areas, including operating systems, cloud systems, distributed systems, networking, memory management, and computer architecture. He holds more than 40 patents in these areas. Yousef has a B.S. in Computer Science from West Virginia University, and an M.S. and a Ph.D. in Information and Computer Science from Georgia Tech.