Which phase of TOGAF is primarily concerned with requirements management?

The phase primarily concerned with requirements management in TOGAF is the Change Management Phase. This phase focuses on ensuring that the architecture is adequately aligned with the business goals and that any changes to the architecture are managed effectively to meet the requirements of the organization.

Within the Change Management Phase, the emphasis is placed on understanding how the architecture evolves in response to changing requirements, stakeholder needs, and any potential impacts on existing business processes. This is where requirements are prioritized and assessed as changes are made to the architecture. Engaging stakeholders throughout this phase helps ensure that all necessary requirements are documented and met, allowing for adaptation to changing organizational needs.

The Opportunities and Solutions Phase, while related to identifying potential solutions, focuses more broadly on assessing opportunities and deciding on projects rather than managing requirements specifically. The Architecture Vision Phase defines the initial architecture vision aligning it with stakeholder requirements at a high level, yet it is not where active management of those requirements takes place. The Preliminary Phase sets the groundwork for architecture development but does not directly handle requirements management in the way that Change Management does.