Isaku Yamahata has been working on virtualization development for more than past 6 years for VA Linux Systems Japan K.K. He has contributed greatly to qemu, kvm and xen community. His major contribution to Linux is pv_ops and xen support to Linux especially ia64/pv_ops/xen support. His current main interest is to improve qemu, kvm and cloud-related technology and has been working on opensatck, openvswtich and openflow recently.