Have you ever got frustrated because the website you have been developing and testing on the inbuilt Visual Studio webserver (Cassini) does not work when published to IIS?

You have always had the option to use a local instance of IIS on your machine to debug Visual Studio web projects but this could be a bit of a pain if like myself you work on many different projects on a daily basis. Scott Gu has just announced on his blog the release of IIS Express which seems to take the best parts of Cassini (ease of use) and combine it with what was required when using a local version of IIS (full IIS feature set support including modules and URL Rewriting).