The document discusses the Open Cloud Computing Interface (OCCI), which aims to provide an open standard interface for cloud computing. It describes OCCI's goals of allowing interoperability between different cloud providers and preventing vendor lock-in. The core OCCI model defines basic resource and link entity types and supports extensions for additional types and functionality. OCCI uses a RESTful API and represents entities with URIs to allow their creation, retrieval, updating and deletion. Implementations of OCCI have been made for various programming languages and cloud platforms.