It builds upon World Wide Web fundamentals by using the Representational State Transfer (REST) approach for interacting with services.

The API is based on a review of existing service-provider functionality and a set of use cases contributed by the working group.

[4] OCCI is a boundary API that acts as a service front-end to an IaaS provider’s internal infrastructure management framework.

OCCI provides commonly understood semantics, syntax and a means of management in the domain of consumer-to-provider IaaS.

The OCCI operates under the umbrella of the Open Grid Forum (OGF),[7] using a wiki [8] and a mailing list [9] for collaboration.