UCS Virtual Machine Manager (UVMM) is an easy-to-use and powerful administration tool for KVM. It virtualizes Microsoft Windows, Univention Corporate Server (UCS) and other Linux distributions by centrally providing all the functions for creating and managing virtual instances and hard drives on physical servers. It is included in UCS by default, an Enterprise Linux distribution with an integrated management system and is operated directly via UCS's web-based management console. Administrators benefit from the uncomplicated, standardized administration of physical servers and virtual instances running on them as well as the ready-to-use, preconfigured configuration profiles. Overview of important functions: Virtualization of Microsoft Windows, UCS and other Linux distros; High degree of flexibility with virtualization technology KVM thanks to standardized virtualization interface Libvirt; Next to local virtualization servers, UVMM also manages cloud computing environments based on OpenStack or Amazon EC2. This allows the out-of-the-box setup of hybrid cloud scenarios with UCS. It also supports Virtual Private Clouds on AWS. Comprehensive functions for the creation and central administration of virtual instances and hard drives, such as the starting, stopping, pausing, deleting, migrating and cloning of virtual systems; Integral, standardized administration interface for the virtualization technology KVM; Status overviews for physical servers and virtual instances at a glance: the administrator receives an overview of the resource utilization of the physical servers and the available virtual instances on them (CPU and memory utilization); Quick set-up of new virtual instances using pre-configured, adaptable profiles; Central administration of hard drive images; Migration of running and stopped virtual instances from one physical server to another; Central administration of clustered servers; Support of paravirtualization for more efficient hardware utilization.