and resources, providing virtual network management, VM life-cycle management, VM image management and fault tolerance. Services are hosted in VMs, and then submitted, monitored and controlled in the Cloud by using the virtual infrastructure interfaces (CLI). After execution, VM images may be copied back to the repository. VM are started, periodically polled to get their consumption and state, and can be shutdown, suspended, stopped or migrated. Miguel Vidal OpenNebula 1.4