HPC in the Cloud has just published an article with a description of the progress made in the implementation of the CERN IaaS cloud. Rubén S. Montero, our Chief Architect, shares insights about managing CERN’s infrastructure. At the heart of the IaaS cloud CERN has implemented is OpenNebula, which is starting to serve as the management layer in production following extensive prototyping and testing. Montero describes the project’s evolution and current status.