CEA Practitioner’s Guide — Addendum A

Overview

Addendum A expands the TOGAF ADM section of the Practitioner’s Guide by providing deep, practical guidance for how the Chief Enterprise Architect leads, governs, and executes each phase of the ADM cycle. While the main guide introduces the ADM at a conceptual level, this addendum serves as the operational manual for CEAs applying ADM in real‑world enterprise environments.

Each phase includes detailed descriptions of the CEA’s strategic role, the activities performed by the EA team, the deliverables produced, and the governance mechanisms required to ensure architectural integrity across the enterprise.

What’s Inside

• CEA leadership responsibilities for each ADM phase
• Detailed activities performed by the CEA and EA team
• Complete deliverable lists for Preliminary through Phase H
• Stakeholder engagement patterns and communication models
• Governance actions and Architecture Review Board integration
• Real‑world guidance, pitfalls, and success factors
• How ADM cycles operate at enterprise scale and across domains
• Requirements Management as a continuous discipline

Executive Summary

The TOGAF Architecture Development Method (ADM) is the procedural backbone of enterprise architecture practice. For the Chief Enterprise Architect, ADM is not merely a framework — it is the operating rhythm through which architectural intent becomes organizational reality.

This addendum provides the depth required for CEAs to apply ADM effectively: how to establish architecture capability in the Preliminary Phase, how to shape strategic direction in Phase A, how to design business, information, and technology architectures in Phases B through D, and how to translate architecture into transformation programs, migration plans, and governance actions in Phases E through G.

Finally, it addresses Phase H and Requirements Management, equipping CEAs with the tools to maintain architectural relevance and coherence as the enterprise evolves. Together, these insights transform ADM from a conceptual model into a practical leadership instrument.