The ADM: Architecture Development Phases (B, C, D)

In TOGAF 10 Foundation, the Architecture Development Method (ADM) includes several phases focusing on different architecture domains. Phases B, C, and D represent the core domain-specific architecture development work. Phase B - Business Architecture: This phase develops the business architecture to support the agreed vision. It defines business goals, organizational structures, business functions, and business processes. Phase B establishes the baseline business architecture, develops the target business architecture, and identifies gaps between them. It focuses on how the organization operates and delivers value to stakeholders. Phase C - Information Systems Architecture: This phase addresses both data and application architectures. It defines information management requirements, identifies data entities, develops data architecture, and designs application systems. Phase C specifies how information flows through the organization and which applications support business processes. This phase produces catalogs of data entities and application portfolios. Phase D - Technology Architecture: This phase defines the technology infrastructure required to support applications and data. It identifies hardware, software, communications infrastructure, and technology standards needed. Phase D addresses system software, infrastructure services, security requirements, and technical platforms. These three phases follow Phase A (Architecture Vision) and are executed iteratively or sequentially depending on organizational needs. Each phase produces detailed architecture artifacts including matrices, diagrams, and catalogs. The phases work together to create a comprehensive view of the organization's current state and target state architecture. The ADM emphasizes that these phases are not strictly linear; organizations may iterate through them multiple times or execute them in different sequences based on project scope and priorities. Each phase involves stakeholder analysis, requirement definition, design, and validation activities to ensure the architecture aligns with business objectives and organizational strategy. In TOGAF 10 Foundation, the Architecture Development Method (ADM) includes several phases focusing on different architecture domains. Phases B, C, and D represent the core domain-specific architecture development work. Phase B - Business Architecture: This phase develops the business architecture …