Consider the following chart: Which important concept for Enterprise Architecture Practitioners does it illustrate?

The chart shown is a Gantt chart, which is commonly used for project management to illustrate a

project schedule. In the context of TOGAF (The Open Group Architecture Framework), which is a

framework for enterprise architecture, this Gantt chart is demonstrating the sequenced approach to

the Architecture Development Method (ADM). The ADM is the core process of TOGAF which

provides a tested and repeatable process for developing architectures. The ADM is described as

being iterative, over the whole process, between phases, and within phases. For each iteration of the

ADM, a fresh decision must be taken about each of the parameters (scope, granularity, time period,

and architecture assets).

The ADM consists of a number of phases that have to be followed in sequence:

Preliminary Phase: Framework and principles

Phase A: Architecture Vision

Phase B: Business Architecture

Phase C: Information Systems Architectures, including Data and Application Architectures

Phase D: Technology Architecture

Phase E: Opportunities and Solutions

Phase F: Migration Planning

Phase G: Implementation Governance

Phase H: Architecture Change Management

Requirements Management

Each phase is dependent on the outputs of the previous phase and the Requirements Management

phase runs throughout. The Gantt chart clearly shows the dependency and sequence in which these

phases occur, implying that a structured approach is followed to produce the enterprise architecture.

The TOGAF Standard, Version 9.2, a standard of The Open Group

The TOGAF documentation available at https://publications.opengroup.org/standards/architecture

and https://publications.opengroup.org/guides/architecture