What is the first phase of the TOGAF ADM?

The first phase of the TOGAF Architecture Development Method (ADM) is the Preliminary Phase. This phase is crucial as it lays the groundwork for the architecture development process. During the Preliminary Phase, various activities are undertaken to establish the architectural framework, including defining the architecture principles, stakeholder engagement, and the scope of the architecture effort.

In this phase, organizations also identify and define the architecture repository, the competencies and responsibilities of the architecture team, and the governance framework that will guide the development of the architecture. This preparation ensures that subsequent phases can proceed smoothly with a clear understanding of the organization's context and requirements.

Each subsequent phase of the ADM builds on the foundation established in the Preliminary Phase, making it essential for successful architecture development and ensuring alignment with the organization's business goals.