Firmstep has launched a new service called AchieveCity, a Web-based government platform powered by the Drupal distribution OpenPublic (developed by Phase2 Technology) and hosted in the Amazon EC2 environment.
Gov 2.0 guide to cloud computing
Cloud computing is a computing model that involves delivering hosted services over the Internet. It enables convenient, on-demand access to a shared pool of computing resources, which may include networks, servers, storage or software applications.