Which of the following is NOT a phase of the Architecture Development Method?

The correct answer identifies "Phase C: Requirements Architecture" as the option that is not a phase of the Architecture Development Method (ADM) within TOGAF. The ADM is structured into several distinct phases, each of which plays a critical role in the development and governance of enterprise architecture.

In the TOGAF ADM framework, the phases are clearly defined, starting from the Preliminary Phase, where initial architecture vision and framework are established, to the later phases including Technology Architecture and Migration Planning. Each of the other options corresponds to an actual phase within this structured approach.

Phase C is specifically concerned with the "Information Systems Architectures," which includes Data Architecture and Application Architecture, rather than focusing solely on requirements. Therefore, it is essential to distinguish that the term "Requirements Architecture" does not exist as a standalone phase in the TOGAF ADM, reinforcing why it is the correct answer in this context.

By understanding the structure and naming conventions within TOGAF, it becomes clear why "Phase C: Requirements Architecture" is not aligned with the official phases outlined in the Architecture Development Method. This recognition helps ensure a solid foundation in the TOGAF framework for anyone studying or applying enterprise architecture methodologies.