In which ADM phase does initial implementation planning occur according to TOGAF?

The initial implementation planning occurs in Phase E: Opportunities and Solutions of the TOGAF Architecture Development Method (ADM). This phase is pivotal as it focuses on identifying the major deliverables and changes involved in implementing the architecture developed in the earlier phases.

During this phase, architects evaluate the candidate solution concepts and their relationships to the architecture vision. They also assess the work packages required to initiate the implementation of the architecture, leading to a coherent set of implementation projects or initiatives. This ensures that the proposed changes are feasible and align with the organization's strategic objectives.

By concentrating on opportunities and solutions, architects can prioritize projects based on their potential benefits and the organization's readiness for change. Thus, Phase E serves as a crucial bridge between the architectural planning and the real-world implementation, making it the phase where initial implementation planning is systematically addressed.