What is Windows Server 2008?

Windows Server 2008 is one of Microsoft Windows' server lines of operating systems. Officially released in 2008, it is Microsoft's replacement for Windows Server 2003 using the new Windows Vista code base. Its main technology changes include improved security and new management features. Two variants of Standard include or exclude hypervisor based virtualization (called Hyper-V).

Windows Server 2008 R2 is an update to the Windows Server 2008 release. It was released to manufacturing on July 22, 2009. Like Windows Vista and Windows 7, Windows Server 2008 is built on Windows NT 6.x.

See: Windows 95, Windows 98, Windows NT, Windows 2000, Windows XP, Windows Server 2003, Windows Vista, Windows 7