This MSDN magazine article focuses on the use of Windows Azure in the Enterprise. Starting with the architecture of a cloud application in general and the Windows Azure Platform in particular.
First the author reviews the (somewhat) accepted cloud taxonomy terms such as Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software + Services (S+S).
Then he puts the Windows Azure Platform into context as a powerful PaaS offering that is heading towards adding IaaS Features.
Following that he goes on to show how it also interfaces nicely with a customer’s on premise Windows Server Platform infrastructure in a hybrid Software Plus Services model. Read more here.