Nextcloud would be a solid European alternative for office365. It's a file sync, groupware, office and xhat solution all in one. It's open source, self hostable and has enterprise support.
Disclaimer: I work at Nextcloud so I'm a bit biased
Disclaimer: I work at Nextcloud so I'm a bit biased
You can't even get people that need a simple word processor or spreadsheet to use LibreOffice.
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