My new book is published!

I am very proud to announce the publication of my new book:

The book is available as hardcover, paperback and ebook. More information and how to order can be found here: https://sjaaklaan.com/book

Abstract

The internet was built on the promise of a borderless world. That promise is fading.

Today, political tensions, extraterritorial legislation, dependence on a handful of global technology providers, and fragile supply chains are reshaping the digital landscape. Digital sovereignty has become a practical challenge for governments, organizations, and the architects who design their digital infrastructure.

Digital Sovereignty in Practice bridges the gap between policy and technology. It explains why Europe's ability to control its own digital infrastructure, data, and critical technologies has become a strategic priority, and shows how these ambitions can be translated into practical architectural decisions.

Drawing on real technologies and implementation strategies, the book explores topics including cloud infrastructure, open-source virtualization, European cloud providers, cybersecurity, secure collaboration platforms, procurement frameworks, and the legal and geopolitical forces shaping today's digital world.

Whether you are an architect, technology leader, policymaker, student, or cybersecurity professional, this book provides both the strategic context and the practical guidance needed to design resilient digital infrastructures for an increasingly fragmented world.

Digital sovereignty is not achieved through declarations or strategy papers. It is built - one architectural decision at a time.

Who this book is for

This book is written for practitioners and decision makers who work at the intersection of technology and governance.

• Enterprise architects, domain architects, and solution architects who design public-sector or enterprise platforms and need to build sovereignty requirements into their systems from the very beginning.

• CIOs, CTOs, IT directors, and digital transformation leads who need to turn high-level risk decisions and regulatory requirements into clear technology strategies and supplier relationships.

• Government officials and policy advisors who are involved in IT procurement, cloud strategy, or digital regulation and need to know the right questions to ask vendors and internal teams.

• Students in IT, computer science, and public administration programs who need a strong foundation in managing and building digital infrastructure during an era of strategic competition between nations.

This entry was posted on Sunday 16 August 2026