Comment That's why we're using Eucalyptus. (Score 1) 27
Given the goals of OpenStack I'd prefer using it, but running a cloud provisioning student learning instances in an academic institution with the academic discounts from Amazon makes it a no-brainer to run a system that allows our cloud to peak into AWS. Repeated discussions with Rackspace about meeting/beating this deal make it clear that they can't even begin to do that. And we have to get the most bang for our buck to ensure our students have optimal systems for their learning.