There is a pattern to how enterprise architecture fails. The models get more detailed, the governance gets heavier, and the people who make the real decisions stop showing up. The architecture is correct and nobody uses it.
Dietmar Wettach and I wrote this book against that pattern. EA is a leadership discipline. It translates strategy into roadmaps and traceable decisions, and it earns its place by being used. One rule runs through all 32 chapters: start small, deliver value early, and expand only where the organization genuinely benefits.
What that covers: capability maps and application landscape planning, transformation and change management, governance that stays light (project portfolio management, IT controlling, the Three Lines of Defense applied to architecture), the modeling languages from TOGAF and Zachman to ArchiMate, BPMN, DMN, UML and C4, cloud-native platforms, API-first integration, FinOps, digital sovereignty under DORA, NIS2, GDPR and the Swiss DSG, and what the EU AI Act asks of an architect.
The book is also the lecture companion for the CAS Enterprise Architecture at the Lucerne University of Applied Sciences and Arts, and it is built to stay on your desk afterwards. Nearly every chapter opens with learning objectives and closes with key takeaways.
The book site lists all 32 chapters, each with its learning objectives.