IaaS will remain relevant for delivering traditional third-party applications. The OpenStack project aims to produce an open source cloud computing platform that is easy to use, simple to implement, and interoperable. As cloud services evolve, OpenStack should consider developing constructs to better support services like PaaS and SaaS as tenants, while still minimizing non-core dependencies and ensuring basic interoperability and oversight. Open standards could help abstract service APIs and facilitate integration with the OpenStack core over time.