In which ADM phase does the value and change management process determine the circumstances under which the Enterprise Architecture is permitted to change after deployment?

Phase F (Migration Planning) focuses on creating detailed implementation and migration plans to transition to the target architecture, not on managing changes post-deployment.

Phase E (Opportunities & Solutions) identifies and evaluates potential solutions and implementation projects, preceding the actual deployment and ongoing change management.

Phase G (Implementation Governance) provides architectural oversight during the implementation of the architecture, ensuring conformance, but does not define the rules for post-deployment architectural changes.

Phase H, Architecture Change Management, is specifically designed to manage changes to the architecture after it has been deployed and implemented. This phase establishes the ongoing architectural governance framework, including processes for evaluating and incorporating change requests to ensure the architecture remains relevant and effective.

The Preliminary Phase focuses on preparing the organization for architecture work and establishing the architecture capability, not on managing changes to an already deployed architecture.