Dear all, during next CLOSER conference there will be a special session dedicated to Cloud Interoperability: the topic is rapidly gaining momentum, and I considered as appropriate to find a place where to gather results and proposals, to have a snapshot of what's happening on the field. The members of this community have an established interest and competence in the field, not restricted to the OCCI initiative: I hope that the many groups and individuals that participate in the task of cloud interoperability find the time and resources to contribute to the event with a paper reporting their results. You find the details about the CLOSER conference at http://closer .scitevents.org/, and infos about the Cloud Interoperability session are at http://closer.scitevents.org/CI.aspx. The conference will be held in Aachen (Germany) 8-10 May, and the deadline for papers submission is *March 1st*. Thank you for your attention Augusto -- Augusto Ciuffoletti Dipartimento di Informatica Università di Pisa 56100 - Pisa (Italy)