The document discusses model-oriented approaches, BPMN 2.0, and Enterprise 2.0. It describes the model-driven architecture approach, its history and key aspects. It outlines the different types of diagrams in BPMN 2.0 including processes, collaborations, and choreographies. It defines the key elements of Enterprise 2.0 including search, links, authoring, tags, and social functions. It also lists example tools that support these approaches.