The Open Group Architecture Framework (TOGAF) is the most used framework for enterprise architecture as of 2020[2] that provides an approach for designing, planning, implementing, and governing an enterprise information technology architecture.[3] TOGAF is a high-level approach to design. It is typically modeled at four levels: Business, Application, Data, and Technology. It relies heavily on modularization, standardization, and already existing, proven technologies and products.
^Stephen Marley (2003). "Architectural Framework," at aiwg.gsfc.nasa.gov, NASA /SCI. Retrieved 10 December 2008 (webarchive.org).
^N. Dedic, "FEAMI: A Methodology to include and to integrate Enterprise Architecture Processes into Existing Organizational Processes," in IEEE Engineering Management Review, doi: 10.1109/EMR.2020.3031968.
^Dirk Draheim, Gerald Weber eds. (2007) Trends in Enterprise Application Architecture: 2nd International Conference, TEAA 2006, Berlin, Germany, 29 November – 1 December 2006, Revised Selected Papers. p. 260