On Tuesday VMware announced their answer to the public cloud: the vCloud Hybrid Service (vCHS). One of the biggest hurdles for the roughly 500,000 VMware customers has been that their on-premise, private infrastructure isn’t directly interoperable with any sizable public clouds, like Amazon AWS or RackSpace. If you want to move towards a public or hybrid cloud model you need to add additional software, like Enstratius’ offerings or VMware’s own vCloud Automation Center. You could also use the vCloud Connector, but that relies on having another vCloud available. One of VMware’s frustrations has been the adoption rate of partners, most refusing to build full vCloud implementations, effectively trapping VMware customers inside their own data centers.