Windows Communication Foundation

How to create:
http://bloggingabout.net/blogs/dennis/archive/2007/04/20/wcf-simple-example.aspx

How to host WCF service in IIS:
http://msdn.microsoft.com/en-us/library/ms733766.aspx


How to host WCF service in a managed windows service:
http://msdn.microsoft.com/en-us/library/ms733069.aspx