DevOps Dictionary

Xen is a free and open-source type-1 hypervisor, providing services that enables multiple operating systems to run concurrently on the same hardware. It was originally developed by the University of Cambridge Computer Laboratory and is now being developed by the Linux Foundation. Xen Project operates in a higher CPU privilege state than any other software on the machine, except for the firmware. The hypervisor manages memory, CPU scheduling for virtual machines ("domains"), and launches the privileged "dom0" domain, which has direct hardware access.