Outlook servers let admins read user emails ... worse than that, outlook has a built in API for filtering mails and chats that allow automated monitoring of what a user does. (I programmed a tool for it that stored a record for a callcenter company that associated chats with the current call a user was handling. The admins got a log that had a bunch of data on a per-call basis that listed who they chatted and mailed and what was said. They claimed it was necessary for some financial (this was a bank) compliance thing)

You have already a lot of solutions for that https://fortune.com/2021/09/08/germany-sovereign-cloud-googl.... Azure has the same kind of services. If in Germany we could take this decision in a Federal level, you could have your gov sovereign cloud, and stand on the shoulders of giants to be able to accomplish the necessary school digitization at Scale.

IBM made it easy for Microsoft.