Windows Azure is a platform containing many services. For instance the Windows Azure Service Bus, which has been one of the first services offered through Windows Azure. It went under the name BizTalk Services first before it was rebranded to .NET Services, subsequently AppFabric Service bus to its current name Windows Azure Service Bus. Currently the Windows Azure Service Bus is a hosted, secure, and widely available infrastructure for widespread communication, large-scale event distribution, naming, and service publishing.
What would the best place be to learn more about this technology than through the TechNet Wiki. The TechNet Wiki has an article called the Windows Azure Service Bus Resources, which is an excellent entry point to get access to some of the many community resources for the Windows Azure Service Bus.
This article contains references to various Windows Azure Service Bus aspects like architecture, development, infrastructure, operations, best practices and real world examples. It is a growing document, which currently contains references to many resources including some exellent TechNet Wiki articles. It is an article that is similar like the BizTalk Server Resources on the TechNet Wiki article. Many resources accessible through one single Wiki page. Great work by the initiator Michael Stephenson.
So go check out all the wonder, and dive in! The Wiki's warm.