The Business Function viewpoint shows the main business functions of an organization and their relations in terms of the flows of information, value, or goods between them. Business functions are used to represent the most stable aspects of a company in terms of the primary activities it performs, regardless of organizational changes or technological developments. Therefore, the business function architecture of companies that operate in the same market often exhibit close similarities. The business function viewpoint thus provides high-level insight in the general operations of the company, and can be used to identify necessary competencies, or to structure an organization according to its main activities.

A Business Role is defined as a named specific behavior of a Business Actor participating in a particular contex

A Business Actor is defined as an organizational entity capable of (actively) performing behavior.

A Business function is defined as a unit of internal behavior that groups behavior according to, for example, required skills, knowledge, resources, etc., and is performed by a single role within the organization.