Dear OCCI WG, during the last weeks I was working as a technical expert for ETSI to develop OCCI and CDMI test scenarios for interoperability testing - e.g. testing if two implementations implementing OCCI, CDMI or both can talk with each other. Yesterday we finished the first draft for which we would be glad to receive feedback from you. The idea of the test scenarios is, to give the testers (humans) an idea how they should test the implementations. It also gives some advice for checking the messages exchanged between clients and servers, but standards conformance testing is not the focus of these test scenarios. A good set of test cases would help a lot making the Cloud Plugfests a success, so please send me your feedback. Cheers, Florian