That's not quite right. Rackspace currently uses the Xen Hypervisor for public Cloud, not VMWare. The new Cloud Servers (Nova) is based on the open source OpenS

That's not quite right. Rackspace currently uses the Xen Hypervisor for public Cloud, not VMWare. The new Cloud Servers (Nova) is based on the open source OpenStack Compute (http://openstack.org/projects/compute/ http://openstack.org/projects/compute/) code base. The new Cloud Servers is in public beta right now for people to try out (http://www.rackspace.com/blog/rackspace-cloud-servers-powered-by-openstack-beta/ http://www.rackspace.com/blog/rackspace-cloud-servers-powere...). The new Cloud Servers will have much greater flexibility and a better feature set. It will help solve many issues that customers have with the current offerings. That information will be coming out over the next couple of months, but since we are only about two-weeks different from the OpenStack nova code base, you can always look there for a preview. Rackspace does offer a VMWare based private cloud (http://www.rackspace.com/managed_hosting/private_cloud/ http://www.rackspace.com/managed_hosting/private_cloud/) for customers who want virtualization, but on their own dedicated hardware. VMWare is not used for public cloud (as far as I know). Obvious Disclosure: I work at Rackspace and this is to the best of my knowledge.