The announcement from Citrix that they are migrating CloudStack to the Apache Foundation under the ASL 2.0 license is a move indicative of what it takes to succeed in large scale cloud computing. Cloud computing isn’t like normal off the shelf software. Cloud computing requires building an ecosystem of developers around it. In essence, it requires a community of people deeply committed to the project. If anything, OpenStack has helped to prove this, as it’s one of the fastest growing Open Source projects ever.