I've used VMware for many years to allow me to test and develop various server configurations and distributions. It's where I played with Linux-VServer, User Mode Linux (UML), Kernel Based Virtual Machine (KVM) and Xen. The relevent part to EC2 here is obviously that EC2 is also Xen based. So far when using EC2 I've stood on the shoulders of giants and taken existing AMIs and used them as they ar