It looks like this is, roughly, a very scaled down version of Centos 5 with EC2 tweaks, and all the EC2 tools pre-installed. Great if you want something super l

It looks like this is, roughly, a very scaled down version of Centos 5 with EC2 tweaks, and all the EC2 tools pre-installed. Great if you want something super lean and ready to customize. They claim that most Centos packages should work out-of-the-box.