Windows Server 2003 is coming to an End-of-Life on July 14, 2015.
Personally, I love Windows Server 2003, one of the best servers created by Microsoft. I had amazing experiences deploying applications on IIS6 and also doing troubleshooting on this platform.
You should already be on Windows Server 2008 or 2012 and running IIS7.5 or IIS8 ; otherwise, start preparing your migration plan, Right away!.
There is a good bunch of information been posted on different Microsoft Sites, and I will try to compile here those that I find most useful.
Don’t panic! We’ve got 10 resources to help you upgrade from Windows Server 2003
Windows Server 2003 end-of-support website
Best Practices for Windows Server 2003 End-of-Support Migration
Keep an eye on this post...