Ive recently been playing with some of the use cases you might be able to implement using Windows Azure BizTalk Services. In this case I wanted to look at the options for exposing the transformation capability of BizTalk as a service which applications could use. This is something that you might occasionally do in BizTalk Server where you simply take a message transform it and return a response. It allows you to abstract this transformation logic outside of the application and perhaps centralize things like reference data.
This sample would look a little like the below diagram.
Rather than writing a big article about this I have decided to make a short video walking through how you can do this. The video is available at the following location:
Also just a quick thanks for the WCF Loopback Binding which was created by Synthesis Consulting.