Windows Server is Microsoft’s operating system for servers. There have been six product releases under the Windows Server brand name, including Windows 2000 Server, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, and Windows Server 2012. Microsoft has steadily expanded the feature set and capabilities of the Windows Server family over the years, and introduced virtualization capabilities (via Hyper-V) with the arrival of Windows Server 2008. Contact US