xEN

xEN is an open-source hypervisor allowing multiple operating systems to run concurrently on a single physical machine. Derived from the Xen Project, xEN enables virtualization, where various guest operating systems can operate independently while sharing the host system's resources such as CPU, memory, and storage. The architecture supports efficient resource management, isolation, and security for virtual machines (VMs), making it a popular choice in cloud computing and enterprise environments. xEN promotes flexibility by allowing users to run different OS types and versions, facilitating development, testing, and deployment of applications in isolated environments.