The March edition of the Internet of Services newsletter features OpenNebula as spinoff of RESERVOIR. This newsletter reports about the activities of the Software & Service Architectures and Infrastructures Unit in the Information Society Directorate-General of the European Commission. The article highlights the innovation and interoperability of OpenNebula and its high number of downloads and adoption in production environments. OpenNebula is being used as reference open stack for cloud computing in many large research and infrastructure projects.