CEA Practitioner’s Guide — Addendum D

Overview

Addendum D expands Section 6 of the Practitioner’s Guide by providing the leadership depth required to build an architecture practice that genuinely influences organizational outcomes. While the main guide introduces the concepts of capability establishment, team building, and governance, this addendum serves as the practitioner’s manual for executing those responsibilities at enterprise scale.

The addendum covers the first 90 days of capability establishment, mandate building, stakeholder management, the detailed Architecture Capability Maturity Model, architect hiring and onboarding, talent development, tooling strategy, practice rituals, and the cultural leadership required to make architecture durable rather than episodic.

What’s Inside

• The first 90‑day plan for establishing the architecture capability
• Executive mandate building and stakeholder landscape management
• Detailed Architecture Capability Maturity Model with diagnostics and transition strategies
• Full architecture talent lifecycle: assessment, hiring, onboarding, development, retention
• Architect hiring frameworks, interview design, and sourcing strategies
• Career frameworks, mentoring programmes, and succession planning
• EA tooling strategy, evaluation criteria, and governance
• Practice rituals and operating cadence for a high‑functioning EA practice
• Long‑term cultural leadership and sustainability of the architecture function

Executive Summary

Building an architecture practice is fundamentally a leadership challenge. The CEA must establish credibility, secure mandate, build relationships, and demonstrate value before governance, standards, or tooling can have meaningful impact. Addendum D provides the structured guidance required to navigate this challenge.

The addendum begins with the first 90‑day plan — listening, mapping the landscape, synthesizing insights, building relationships, and delivering visible quick wins. It then expands the Architecture Capability Maturity Model with detailed diagnostic indicators and transition strategies for each level, enabling CEAs to assess their current state and plan credible progression.

The talent sections provide a complete lifecycle for architect hiring, onboarding, development, and retention, recognizing that architecture is ultimately a people practice. Tooling strategy, practice rituals, and cultural leadership complete the operating foundation, ensuring the EA function becomes durable, valued, and embedded in organizational decision‑making.

Together with Addendum A (ADM execution), Addendum B (deliverables reference), and Addendum C (EA operating model), Addendum D completes the leadership framework for enterprise‑scale architecture execution.