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Report: Microsoft to face antitrust case over Teams
(arstechnica.com)
This is a most excellent place for technology news and articles.
If your company doesn't pay up or there is a failure with the processing, you would still have all your mails locally instead of your cloud provider deleting them all plus all backups.
Clearly that would be terrible.
Not sure whether you're kidding, but that sounds like slacking time, so yes please, put that stuff on the cloud