Key points
- The agency abandoned its planned Microsoft 365 rollout in favor of an on-premises, open-source strategy.
- An advisory council recommended reversing the move in June, leading to a pause in July and a final cancellation.
- Approximately 5,000 employees had already migrated before the decision was made to halt the transition.
The short version
- The Dutch Tax and Customs Administration stopped its migration to Microsoft 365 public cloud services.
- A government advisory council advised against the move in June, citing a recommendation to reverse the rollout.
- The agency will retain existing Microsoft software while shifting future plans to open-source solutions.
The details
The Netherlands Tax and Customs Administration has officially ended its planned migration to Microsoft 365 public cloud services. The agency had originally scheduled the switch to begin in 2025, with full completion targeted for the end of 2026. According to reports from ZDNET, approximately 5,000 employees had already moved to the new system before the project was halted. The government paused the rollout in July following a recommendation from the Dutch Advisory Council on ICT Assessment in June. The latest announcement confirms that the public cloud migration is replaced by an on-premises approach using open-source technology.
The administration is not replacing all Microsoft Office applications with a single open-source suite immediately. Instead, it will keep its current Microsoft software while transitioning to the new model. This decision marks a significant shift in government IT infrastructure strategy. The agency is moving away from US-based cloud providers toward locally controlled systems. This change aligns with broader European trends in digital sovereignty. The move reflects the agency's decision to abandon the public cloud plan. It also signals a preference for open-source alternatives in future deployments.
The context
Digital sovereignty is a growing priority for European organizations. The Linux Foundation released the 2026 State of Open Source in Europe report at the Open Source Summit Europe conference. The report found that 94% of EU organizations consider digital sovereignty important. Additionally, 61% of those organizations view it as very important. Thierry Carrez, general manager of Linux Foundation Europe, stated that Europe has clearly heard the message on digital sovereignty. N
What to do and how to stay safe
- Network segmentation stops a compromised IoT device from accessing sensitive business files.
- Disabling remote administration prevents attackers from bypassing your physical security.
- Regular firmware updates patch known vulnerabilities before they can be exploited.
Treat your home router as a critical business asset, not a convenience. Segment your network and disable remote access to reduce risk significantly.
Step-by-step guide: Secure Home Routers for Small Business Networks
General security guidance from the TechSec Headlines newsroom. It is not confirmed advice from the organisations named in this story.
