IIS Versions

What is IIS?
IIS stands for Internet Information Services. IIS is currently the second most popular web server. ( source ). Here is the Netcraft graph:
Market Share for Top Servers Across All Domains August 1995 - December 2010

IIS versions are tied to the operating systems they run on ( source, source ) . It is not my place to judge Microsft marketing decisions, but I would have gone another way.

Operating SystemIIS Version
Windows NT Server 3.51 1.0
Windows NT Server 4.0 2.0
Windows NT Server 4.0 SP3 3.0, 4.0
Windows 2000 5.0
Windows XP 5.1
Windows 2003 6.0
Windows 2008 (Vista) 7.0
Windows 2008 R2 (Windows 7)7.5

What do you think?

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