Our business is going through a rebrand and we have been using Microsoft/Office 365 for 6+ years. As we approach the rebrand, I'm wondering how best to handle the 365 setup/migration. Would it make more sense to try to rename/realias everything, or just start from scratch with a new account. I've read that some things are very hard to change or don't change (such as the M365 companyname.onmicrosoft.com domain).
If anyone has any suggestion, or pointers or best practices, I would appreciate it. Google searching doesn't help much, it mostly brings results on the Office365->Microsoft365 name change.