Windows Server is a brand name for a group of server operating systems released by Microsoft. It includes all Windows operating systems branded "Windows Server", but not any other Microsoft product. The first Windows server edition to be released under that brand was Windows Server 2003. However, the first server edition of Windows was Windows NT 3.1 Advanced Server, followed by Windows NT 3.5 Server, Windows NT 4.0 Server, and Windows 2000 Server; the latter was the first server edition to include Active Directory, DNS Server, DHCP Server, Group Policy, as well as many other popular features used today.
- Windows Server 2003 (April 2003)
- Windows Server 2003 R2 (December 2005)
- Windows Server 2008 (February 2008)
- Windows Server 2008 R2 (July 2009)
- Windows Server 2012 (August 2012)
- Windows Server 2012 R2 (October 2013)
- Windows Server 2016 (upcoming).
Microsoft has also produced Windows Server Essentials (formerly Windows Small Business Server) and the discontinued Windows Essential Business Server, software bundles which include a somewhat restricted Windows Server operating system and some other Microsoft Server products.
- Microsoft Servers
- Other Microsoft server operating systems: Windows NT 3.1, 3.5, 3.51, 4.0, Windows 2000 Server and Windows Home Server
- Linux#Servers, mainframes and supercomputers
- Netware and Novell Open Enterprise Server
- "Windows Server 2008 R2". Microsoft Server and Cloud Platform. Microsoft. Archived from the original on 29 September 2011.
- "Windows Server". TechNet. Microsoft. Archived from the original on 8 December 2010. Retrieved 26 September 2011.
- "Windows Essential Business Server". Microsoft TechNet. Microsoft Corporation. Retrieved 26 September 2011.
- "Windows Small Business Server 2008 Technical FAQ". Microsoft TechNet. Microsoft Corporation. Retrieved 26 September 2011.
- Thurrott, Paul (3 September 2011). "Windows Small Business Server 2011 Essentials". Supersite for Windows. Penton Media, Inc. Retrieved 26 September 2011.
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