The Netherlands Tax and Customs Administration has abandoned its planned Microsoft 365 cloud migration in favour of services hosted on infrastructure it controls, alongside European open source alternatives. Email and calendars will move on-premises in 2027, followed by storage and collaboration services later that year and in 2028.
On security, the board noted concerns about sending confidential documents, which currently travel over government networks, via American servers. The board also criticised reliance on standard Microsoft encryption for sensitive data rather than Double Key Encryption, which would give the administration greater control. End-to-end encryption was not enabled by default for one-to-one Teams calls and was unavailable for group calls under the chosen configuration.
“Organisations have recognised the risks of digital dependencies and are looking for better options to have full control over their data, infrastructure, and underlying technology. The organisations now aim to build a more resilient IT stack.“







