The DMTF has released a white paper titled: Interoperable Clouds. From the abstract: “This white paper describes a snapshot of the work being done in the DMTF Open Cloud Standards Incubator, including use cases and reference architecture as they relate to the interfaces between a cloud service provider and a cloud service consumer. The goal of the Incubator is to define a set of architectural semantics that unify the interoperable management of enterprise and cloud computing. This paper summarizes the core use cases, reference architecture, and service lifecycle. These building blocks will be used to specify the cloud provider interfaces, data artifacts, and profiles to achieve interoperable management.“
The paper lays out several great models for cloud services, and I encourage everyone to read the whole whitepaper. Here is a picture from chapter 5 on the Cloud Service Reference Architecture:
The group has all the right players participating, including: AMD, CA, Cisco, Citrix, EMC, Fujitsu, HP, Hitachi, IBM, Intel, Microsoft, Novell, Rackspace, RedHat, Savvis, SunGard, Sun Microsystems, and VMware. The white paper is just the first milestone in the group’s work. Chapter 6 lays out the next steps for the group, including future Alliances work.