Back at TechEd, the Microsoft guys showed off a prototype of an Azure adapter for BizTalk. Sure enough, now you can find the BizTalk Azure Adapter SDK up on CodePlex.
What’s there? I have to dig in a bit, but looks like you’re getting both Live Framework integration and .NET Services. This means both push and pull of Mesh objects, and both publish/subscribe with the .NET Service bus.
Given my recent forays into this arena, I am now forced to check this out further and see what sort of configuration options are exposed. Very cool for these guys to share their work.