Xen is a paravirtualising virtual machine monitor (VMM), or `hypervisor’, for the x86 processor architecture. Xen can securely execute multiple virtual machines on a single physical system with close-to-native performance. The virtual machine technology facilitates enterprise-grade functionality, including:
- Virtual machines with performance close to native hardware.
- Live migration of running virtual machines between physical hosts.
- Excellent hardware support (supports most Linux device drivers).
- Sandboxed, restartable device drivers.
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