- * '''Virtual machine monitor (VMM)''' and '''hypervisor''' refer to the software layer developed and maintained by the Xen open source community that provides VM Server functionality.
+ * Xen开源社区开发和维护着涉及软件层'''虚拟机监控程序(VMM)''' 和 '''hypervisor''',同时它也提供功能性虚拟机服。