GoKawiilDutch Tax Agency Scraps Microsoft 365 Cloud Migration for On-Premises Open Source
The Netherlands' Tax and Customs Administration has cancelled its planned rollout of Microsoft 365 on the public cloud after about 5,000 employees had already migrated. The government paused the project in July following a June recommendation from the Dutch Advisory Council on ICT Assessment, and State Secretary Eelco Eerenberg has now outlined a replacement plan moving mail and calendar functions on-premises in 2027, followed by European open-source tools for storage and collaboration in 2027-2028.
GoKawiil's interpretation of the reporting above, not reported fact.
The decision coincides with a Linux Foundation survey showing 94% of EU organizations consider digital sovereignty important, suggesting the Dutch move reflects a broader European push to reduce reliance on US cloud providers. The Netherlands is reportedly also considering wider shifts from Windows and proprietary software to Linux across government, which could signal growing momentum for open-source adoption in public administration beyond this single agency.
- The Dutch Tax and Customs Administration cancelled its Microsoft 365 public-cloud rollout despite 5,000 employees already having migrated.
- A phased replacement plan will move mail/calendar on-premises in 2027, with European open-source storage and collaboration tools following in 2027-2028.
- The shift aligns with a Linux Foundation finding that 94% of EU organizations view digital sovereignty as important, amid wider Dutch interest in moving from Windows to Linux.
Source: news.slashdot.org, 2026-10-14
Published there as: “Dutch Tax Authorities Cancel Microsoft 365 Cloud Rollout, Turn Toward Open Source”
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