Another data point: I've visited public libraries around Friesland province. They all use catalog + internet facilities which look & feel the same across libraries: a browser (Mozilla) + office suite, PDF reader, files can be saved locally put don't persist between user sessions.
This would lend itself perfect for a Linux-based setup: netboot (from per-building local file server or NL-based cloud), read-only filesystem, LibreOffice etc.
But alas: the setup is Windows-based (running on Intel NUC or similar), office suite is Microsoft Excel/Word/PP. Completed by Acrobat PDF reader. No doubt it's at least able to leak telemetry and/or user data if Microsoft were to feel like it (or asked/forced to do by US gov).
France even has an official map of this kind, with publicly visible recommendations: https://suiteterritoriale.anct.gouv.fr/conformite/cartograph...
Disclaimer: I made mxmap.be after seeing Swiss ant Dutch counterparts. I did not look at MX records only but also at EHLO replies, SPF and DMARC records and at fronting services.
Do not forget to minimize the geojson (there is even a web-based service for that) and to enable compression in your web server.
https://jurgen.gaeremyn.be/2025/03/08/european-critical-depe...
"Purely based on the MX-records, we learn that 72% of Belgian municipalities run Microsoft mail servers and 60% of the Dutch municipalities. For Scandinavia, it’s 64% in Norway and 57% in Sweden. In Finland, it’s a whopping 77% if the cities that are being served by Microsoft."