Which ADM phase focuses on defining the problem to be solved, identifying the stakeholders, their concerns, and requirements?

Phase A: Architecture Vision is the initial phase of the Architecture Development Method (ADM) cycle. Its primary objectives are to establish the architecture project, define its scope, identify key stakeholders, and understand their concerns and business objectives. This phase culminates in the creation of an Architecture Vision document, which articulates the problem to be solved and provides a high-level aspirational view of the target architecture, ensuring it aligns with stakeholder requirements.

A. "Phase" is not a specific, valid name for any phase within the TOGAF ADM cycle.
B. The Preliminary Phase focuses on establishing the Architecture Capability within the organization, not on defining the scope and requirements for a specific architecture project.
C. "Phase" is not a specific, valid name for any phase within the TOGAF ADM cycle.

1. The Open Group, TOGAF® Standard, 10th Edition, The ADM. Chapter 5, "Phase A: Architecture Vision". Section 5.2, "Objectives", states the objectives are to "Develop a high-level aspirational vision of the capabilities and business value..." and "Identify key stakeholders, their concerns, and business requirements".

2. The Open Group, TOGAF® Standard, 10th Edition, The ADM. Chapter 4, "Preliminary Phase". This chapter describes the focus on preparing the organization for architecture work, such as defining principles and tailoring the framework.