I don't understand how Outlook isn't a compliance nightmare. Especially since it's moved to the cloud. The amount of very sensitive data Microsoft must have on just about every single business/industry thanks to outlook and excel is insane.
At one place I worked when the company replaced my old machine with a new windows 10 system it was configured to send every single keystroke back to Microsoft. There was zero concern over privacy or compliance, just an assumption that MS would never abuse that data for any reason. I did not have their faith and disabled that "feature" then changed a massive number of other policies to try and keep as much data out of Microsoft's hands as I could.
At one place I worked when the company replaced my old machine with a new windows 10 system it was configured to send every single keystroke back to Microsoft. There was zero concern over privacy or compliance, just an assumption that MS would never abuse that data for any reason. I did not have their faith and disabled that "feature" then changed a massive number of other policies to try and keep as much data out of Microsoft's hands as I could.