Ubuntu Enterprise Cloud Eucalyptus

Ubuntu Enterprise Cloud (UEC) is powered by software from Eucalyptus Systems, and _provides an open source software infrastructure for implementing on-premise cloud computing. UEC makes it extremely easy and fast for system administrators to set up, deploy and manage a cloud environment. Users familiar with elastic compute environments will be able to build similar infrastructure behind their firewall, avoiding any regulatory and security concerns that prevent many enterprises from taking advantage of cloud environments.

Ubuntu 9.10 Server Edition will also be available on the Amazon EC2 environment as an Amazon Machine Image (AMI) from 29 October. Having the same images available on UEC or on Amazon's public cloud means that work done can be deployed in either environment which improves portability and flexibility for users._