IIS Timeline

Internet Information Services (IIS, formerly Internet Information Server) is an extensible web server created by Microsoft

IIS version Windows OS Remarks/Features
IIS 1.0 Windows NT 3.51;  1996
IIS 2.0 Windows NT 4.0 1996
IIS 3.0 Service Pack 2 of Windows NT 4.0 1996; introduced Active Server Pages (ASP)
IIS 4.0 "Option Pack" for Windows NT 4.0 1997 
IIS 5.0 Windows 2000 2000; support for the WebDAV protocol, enhancements to ASP
IIS 5.1 Windows XP Professional 2002 
IIS 6.0 Windows Server 2003 2003 
IIS 7.0 Windows Server 2008, Windows Vista 2008 
IIS 7.5 Windows 7, Windows Server 2008 R2 2009 
IIS 8.0 Windows Server 2012 and Windows 8 SNI (binding SSL to hostnames rather than IP addresses), Application Initialization, centralized SSL certificate support
IIS 8.5 Windows Server 2012 R2 and Windows 8.1 Idle worker-Process page-out, Dynamic Site Activation, Enhanced Logging, ETW logging, and Automatic Certificate Rebind
IIS 10 Windows Server 2016 and Windows 10 support for HTTP/2

OWIN (Open Web Interface for .NET) is an interface specification. It decouples a web applications from IIS. OWIN/Katana (set of components by Microsoft built using OWIN specifications) reduces your server running costs since your web servers do not need to run on IIS (Windows) anymore

Comments