The TOGAF standard covers the development of four architecture domains: Business, Data, Technology, and Application. The Application Architecture domain defines the applications required to process the data and support the business functions.
The TOGAF standard describes the development of four architecture domains, which are considered its pillars. These are Business, Data, Technology, and Application. The Application Architecture domain provides a blueprint for the individual application systems to be deployed, their interactions, and their relationships to the core business processes of the organization.