Have you ever wondered how Microsoft Office communicates with SharePoint, for example how does Outlook create a meeting workspace? In the past you would need to put some type of IP tracing tool between the client and the server to see what was going on, which was pretty hard and not always that clear.

Well now as part of the Microsoft Protocol Program Microsoft has released the first version of the protocol documentation for SharePoint. This documentation can be viewed and downloaded from here: SharePoint Product and Technologies Protocols

Enjoy.