Frederick, It seems you read it right. I found the Ubuntu docs on "Getting Started with Eucalyptus in Ubuntu 9.04" at https://help.ubuntu.com/community/Eucalyptus - it's all about setting up your own private cloud, and the last step links to a RightScale page to allow your RightScale account (free or paid) to access your new cloud. I've been following both RightScale and Eucalyptus for a couple of months; both the Eucalyptus team and RightScale are a few miles down the road from where I live. I've been assembling some hardware to run my own Eucalyptus cloud when 9.04 shipped (my download just finished), so the announcement about using RightScale to manage it allows me to combine two interests. It should be fun setting it up this weekend! I only have the Developer Edition of RightScale, so I won't be able to play with autoscaling :-( One drawback I see to RightScale's product segmentation is that there is a very big gap between the features available in the free Developer Edition and the paid Web or Grid Editions. They need something in-between (some sort of Pilot Project Edition) that, for a small fee, gives access to the rest of the (very cool) features in limited amounts. You could use it to build a prototype system on an Eucalyptus cloud, but you'd need a full edition of RightScale to scale it up as a full commercial system. Then a corporate team doing a pilot project, or a person developing an idea in their home office (or dorm!), could experiment with auto-scaling, or cluster deployments, or grids, and see how well the RightScale tools work for them. If it works out and they want to go big, they'd then have the ROI rationale to move up to the more costly full editions of RightScale.