European Sovereignty Monitor

Compute and infrastructure

Dutch tax authority drops Microsoft 365 migration for on-premises and EU open source

Dutch State Secretary Eelco Eerenberg told parliament the tax, customs and benefits services will abandon their Microsoft 365 migration. They will use on-premises servers and European open source tools from 2027, after expanding datacentre capacity.

Verified AI-drafted Tweede Kamer, Kamerbrief "Toekomstbestendigheid Belastingdienst" (State Secretary Eelco Eerenberg), 5 October 2026

What it does not test. It does not commit the Belastingdienst to a full exit from existing Microsoft licences, nor confirm which open source tools are chosen for 2027 and 2028.

How this item counts. Towards autonomy: it changes who owns, who operates, whose law governs. Binding 1 of 3 (announced), scale 1 of 3 (small), Verified counts in full: weight +3 of 36 possible. NL tax agency plans exit from Microsoft 365 to on-prem/EU open source from 2027; single agency. European Sovereignty Index

How this item was made. Drafted by an AI system (Claude (Anthropic)) from the source cited above and published under the editor’s responsibility without a person reading it first. How the record is made

What the tags mean: VerifiedReportedAI-draftedAI-drafted, editor-readHuman-writtenWhat the tags mean

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