Slashdot links to a good article on virtualization, this time the inclusion of KVM, Kernel-based Virtual Machine, in the 2.6.20 kernel. There are now, at least, four virtualization options for Linux: VMWare, KVM, Xen (our preferred approach), and QEMU. KVM is new to me; it’s backed by Qumranet which includes the former CTO of XenSource, Moshe Ben, as one of its founders.