I have been doing all my development and deployment on VMWare's virtual machines hosted on clustered ESX servers for over two years now and has found it to be very stable. VMware has proven itself to be a formidable player in the virtualization space that is at the heart of the public cloud. Terremark, a leading global provider of IT infrastructure services delivered on the industries most robust and advanced operations platform. Leveraging purpose-built datacenters in the United States, Europe and Latin America and access to massive and diverse network connectivity from more than 160 global carriers announced a convergence with VMware to provide vCloud Express (https://vcloudexpress.terremark.com). This is the Infrastructure as a Service (IaaS) opportunity that Terremark is tapping into to allow small to large businesses have data center infrastructure for coffee cup prices. I highly recommend this solution over Amazon EC2 any day.