"If you're building an internal or private cloud, Canonical
wants you to use Ubuntu Linux 10.04 as your operating system of
choice. To that end, the newest version of Ubuntu includes a
feature set called Ubuntu Enterprise Cloud.
"In keeping with its open source pedigree, Ubuntu Enterprise
Cloud is integrated with the open source Eucalyptus private cloud
platform, making it possible to create a private cloud with much
less configuration than installing Linux first, then
"And for those thinking about eventually moving resources to the
public cloud, or simply bursting to the public cloud when workloads
spike, the Ubuntu/Eucalyptus internal cloud offering is designed to
be compatible with Amazon's EC2 public cloud service."