Internet Information Server
IIS, or Internet Information Server, is the web server component of Microsoft Windows Server. It was introduced via the Windows NT Option Pack 1 for Windows NT 4.0. It has been included with all versions of Windows Server since the release of Windows 2000 Server, including Windows 2003 Server. IIS is the default web server for and included with all verions of Windows Server.

The non-server versions of Windows do not include IIS, except for the professional versions of Windows. Windows 2000 Professional, and Windows XP Professional include a limited development version of IIS that can be used for testing and development. This version of IIS has all the same features as the full server version of IIS, but is performance limited to prevent use on a production web site but still functions perfectly fine for development and testing on a workstation.


Additional References
Microsoft IIS Start Page
IIS Answers - News, General Information, and Articles on IIS


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