What is CMIS?
CMIS (Content Management Interoperability Services) is an OASIS
standard enabling information sharing between different Content
There are a couple of good tutorials and other resources on the web.
An introduction to CMIS including use cases and a lot of links
A general (technical) overview about CMIS in a blog series
A CMIS presentation and an overview about the Apache Chemistry project
at the Apache Dev Con 2010.
An introduction focusing on the AtomPub protocol
Another presentation about CMIS including a lot
of history and motivation also available as recording.