Abstract
The Cloud Computing paradigm has been adopted in countless areas of application and forms the basis of a growing number of business cases. Similar to the situation with service providers in the 1980th, it becomes apparent that different Cloud providers build walled gardens around their offerings. While multiple projects and organizations are working on standards for federating Cloud domains, the scalable exchange of descriptions about heterogeneous resources are often not well considered. Our approach is to adopt both, ideas initially developed for the Internet to define a scalable architecture and concepts from the Semantic Web to define a canonical Intercloud ontology. An initial implementation of the architecture has been developed to form a basis for further refinement of the proposed concepts. As a result, we have defined an initial ontology for Intercloud resources and implemented a catalog for the IEEE Intercloud architecture.