TOGAF Top level view

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Introduction

The Top level view gives an overview of all main concepts used in TOGAF. The "top level" indicates that all other TOGAF concepts can be related in some way to these top level concepts.

Description

The top level diagram displays two main things: (1) the parts of TOGAF, and (2) the main concepts.

TOGAF Parts

TOGAF contains 5 main parts, corresponding with the TOGAF publication Part numbers II - VII (Part I is only a summary). In the diagram they are displayed on the bottom.

  1. The Architecture Development Method, the most referenced and well known part of TOGAF (Part II & III)
  2. The Architecture Content Framework (Part IV)
  3. The Enterprise Continuum (Part V)
  4. The TOGAF Reference Modles (Part VI)
  5. The Architecture Capability Framework (Part VII)

TOGAF main concepts

TOGAF in the first place is an Architecture Framework, which itself is a Framework. The Framework concept has a generic character and because it is being used on other levels in TOGAF as well, it can be considered as a key concept.

An Architecture Framework is about Architecture, which is another key concept. A semantic relation can be made to the System concept, because Architecture is considered to be about a System.

A similar relationship can be discovered in the concept of Enterprise Architecture, which is about the Enterprise, being a special case of System.

The concept of Enterprise Architecture is, remarkably, not defined very clearly in TOGAF, although TOGAF is defined as to provide methods and tools for it [1].

TOGAF's interpretation of the Enterprise Architecture concept colors TOGAF quite significantly: the Enterprise Architecture appears to have four Architecture Domains: Business, Data, Application and Technology Architecture. Although the terms (business, data, application, technology) are widespread, the division in these four domains seems to be specific for TOGAF. Archimate, for example, uses only three domains: Business, Application and Technology. The Zachman framework [2], another example, has six, and the Amsterdam Information Model [3] considers Business, Information/communication and Technology.

Concepts

References

  1. http://alcedocoenen.wordpress.com/2011/09/28/the-togaf-metamodel-and-the-definition-of-enterprise-architecture/
  2. http://www.zachman.com/
  3. http://www.humanlogic.nl/pdf/Abcouwer-Negenvlak.pdf
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