Architecture Change Management


Change is a part of life. Everything from the low level code requirements up to the enterprise-wide requirements will continue to change. In fact, this change is the bread and butter for a lot of us! This phase is dedicated to handling and managing such changes.

Objectives


The objective of this phase is to ensure that the architecture life-cycle is maintained in the ever changing environment. It is to ensure that the Architecture Governance Framework is not messed up and executed as it should be. And to ensure that the Enterprise Architecture Capability meets current requirements.

Steps


In order to achieve this, the TOGAF standard recommends these steps:

  • Establish the value realization process
  • Deploy monitoring tools
  • Manage risks
  • Provide analysis for architecture change management
  • Develop change requirements to meet performance targets
  • Manage governance process
  • Activate the process to implement change

Inputs


Similar to the Phase G, this phase takes in all the finalized inputs from the previous phases, along with the specific change related inputs

  • Request for Architecture Work (Preliminary Phase)
  • Organization Model for Enterprise Architecture (Phase A)
  • Tailored Architecture Framework (Preliminary Phase, Phase A)
  • Statement of Architecture Work (Phase A)
  • Architecture Vision (Phase A)
  • Architecture Repository
  • Architecture Definition Document (Built over all phases and finalized in Phase F)
  • Architecture Requirements Specification (Built over all phases and finalized in Phase F)
  • Architecture Roadmap (Built over all phases and finalized in Phase F)
  • Implementation and Migration Plan (Phase E, F)
  • Implementation Governance Model (Phase F)
  • Signed Architecture Contract (Phase G)
  • Compliance Assessments (Phase G)
  • Change Requests due to technology changes
  • Change Requests due to business changes
  • Change Requests from lessons learned

Outputs


The change management process generates the following outputs:

  • Architecture updates
  • Changes to architecture framework and principles
  • New Request for Architecture Work, to initiate another cycle of the ADM
  • Statement of Architecture Work, updated if necessary
  • Architecture Contract, updated if necessary
  • Compliance Assessments, updated if necessary