Ulv Bjørnsson: on technology and control
Most architecture decisions are made in procurement, before any design starts. I have spent fourteen years on both sides of that process, building platforms and running migrations.
I write here about what interests me. Lately that is digital sovereignty.
Digital sovereignty
A series on keeping control of infrastructure you don’t fully own, and on testing whether you have it.
- Sovereignty Is a Control Boundary, Not a Location January 2026
Sovereignty as an operating capability: decision rights you can enforce, and evidence you can produce under pressure. - In China, Someone Else Operates Your Cloud 2019
Your cloud is run by a licensed local operator, not the hyperscaler on the logo.
Cloud and infrastructure
- Multi-Cloud and Omni Cloud Are Not the Same Thing 2023
Running several clouds is not a strategy. What omni-cloud actually adds. - Developer Autonomy Is a Platform Decision 2022
How much freedom developers get is decided by the platform, not by policy documents. - Azure Governance Never Finishes 2019
Platform governance is permanent work, not a project phase. - Security Questions to Settle Before a Migration 2019
The decisions that are cheap before a migration and expensive after.
Security
- The Gap Where the Provider’s Responsibility Ends 2022
Most incidents happen on the customer’s side of the shared responsibility line. - Smart Cities Need Their Own Security Model 2022
City infrastructure fails differently from enterprise IT. - AI Arms Both Sides of Security 2019
- Four Azure Tools for Securing What You Run 2019
- Cryptography in a Post-Quantum World 2019
- What Quantum Computing Does and Does Not Threaten 2019
- Cybersecurity on the Blockchain 2019
What blockchain actually changes for security, and what it merely rebrands.
Emerging technology
- Coco Is a Framework, Not a Ledger 2018
- Blockchain After the Cryptocurrency Hype 2019
- AI Moved Fraud Detection Into Real Time 2017
- Smart Contracts and ‘Code Is Law’ 2019
Technical notes
Azure, PowerShell, Active Directory and AirWatch, from 2017 and 2018. Browse the notes →
Ulv Bjørnsson 