Chapter 31. TOGAF ADM Guide-Through

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  4. 11. Phase H – Architecture Change Management

11. Phase H – Architecture Change Management

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Phase H (Architecture Change Management) looks at establishing procedures for managing change to the new architecture.  It is to ensure that the architecture achieves its original target business value. This includes managing changes to the architecture in a cohesive and architected way.

This Phase involves the following EA activities:

  • Provide continual monitoring and a change management process
  • Ensures that changes to the architecture are managed in a cohesive way
  • Establishes and supports the Enterprise Architecture to provide flexibility to evolve rapidly in response to changes in the technology or business environment
  • Monitors the business and capacity management


The objectives of Phase H are to:

  • Ensure that the architecture lifecycle is maintained
  • Ensure that the Architecture Governance Framework is executed


This section defines the inputs to Phase H.

  • Reference Materials External to the Enterprise
  • Non-Architectural Inputs
  • Architectural Inputs


The level of detail addressed in Phase H will depend on the scope and goals of the overall architecture effort. The order of the steps in Phase H as well as the time at which they are formally started and completed should be adapted to the situation at hand in accordance with the established Architecture Governance.

The steps in Phase H are as follows:

  1. Establish Value Realization Process
  2. Deploy Monitoring Tools
  3. Manage Risks
  4. Provide Analysis for Architecture Change Management
  5. Develop Change Requirements to Meet Performance Targets
  6. Manage Governance Process
  7. Activate the Process to Implement Change


The outputs of Phase H may include, but are not restricted to:

  • Architecture updates (for maintenance changes)
  • Changes to architecture framework and principles (for maintenance changes)
  • New Request for Architecture Work, to move to another cycle (for major changes)
  • Statement of Architecture Work, updated if necessary
  • Architecture Contract, updated if necessary
  • Compliance Assessments, updated if necessary