What is the purpose of the Preliminary Phase in TOGAF?

The purpose of the Preliminary Phase in TOGAF is to establish the architecture framework and define the scope of architecture development. This phase is crucial as it sets the foundation for the entire architecture development process. During this phase, organizations identify their architecture principles, baseline architecture, and key stakeholders. Establishing an appropriate architecture framework ensures that all subsequent phases of the architecture development are aligned with the organization's goals and objectives.

In addition, this phase involves gathering information about the organization's existing architecture and determining the architecture’s context, governance, and processes. By clearly defining the scope and the framework, the Preliminary Phase helps ensure that all architecture efforts are focused and cohesive, which is essential for the successful execution of architecture initiatives in later phases.