The Sovereignty Stack: An Enterprise Architect's Guide to Owning Your Dependencies

Who really controls the technology your organisation depends on, and what happens when that control changes?

A vendor changes its licensing overnight. A foreign legal demand reaches data stored in your own region. The AI model inside your business process cannot be moved. Most organisations discover these dependencies only when they have to pay for them.

The Sovereignty Stack gives enterprise architects, CIOs, CISOs and data officers a practical way to find those dependencies first. It treats digital sovereignty as an architectural quality, like security or resilience, and not as a cloud decision or a procurement exercise.

Inside the book

• The Sovereignty Stack: seven layers (Data, Identity, Platform, Infrastructure, AI, Standards and Supply Chain) and a four-level maturity model.
• Why interoperability is not enough, and how to tell portability from strategic choice.
• Data and identity: the difference between where your data sits and who can be compelled to disclose it.
• Platform sovereignty: an honest look at Linux endpoints in regulated environments.
• AI sovereignty: why the real lock-in is the context around the model, not the model itself, and a three-view framework for assessing it.
• Intelligence is not authority: designing agents so reasoning, decision and authorisation stay separate.
• A five-question test and a scoring worksheet to measure your exposure, plus a step-by-step method for rehearsing an exit before you need one.

Grounded in practice

The framework is tested at two scales: on the author's own machines, where a Windows-to-Linux migration included a rollback and a dead end, and in enterprise and government settings, including lessons from Saudi Arabia's national enterprise architecture work. Short "Gulf perspective" sections add insights from the region, while the framework itself is international.

Who it is for

Enterprise and solution architects, technology and security leaders, and policy-minded technologists in government, finance, health and other regulated sectors.

You will finish with a vocabulary for talking about dependency, a worksheet you can use on Monday morning, and a method for testing whether your exit strategy is real.

Sovereignty does not mean owning everything. It means knowing what you depend on, and having chosen it.