Back in December (2011), Microsoft released the Azure Service Bus EAI & EDI Labs.  This is a sort of CTP with labs.

It’s built on top of AppFabric Service Bus, but seems to contain much more than raw messaging.

According to the MSDN documentation, it seems that a lot of BizTalk concepts were re-used.  For instance, look at a ‘transform project’:

If you see a familiarity with the Mapping tool of BizTalk, you’re not alone!

I haven’t have time to really look at this new piece of technology.  I just hope it won’t have the same curse than BizTalk, for instance making a simple scenario extremely complicated and being a deployment & monitoring hassle.