How to catch all account dependencies during user offboarding

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

1. 1
   Manually checking every separate admin center
2. 2
   Disabling the account immediately and dealing with broken dependencies only when someone complains
3. 3
   Relying on department managers to figure out what needs to be reassigned
4. 4
   Deleting the user and restoring the account later if issues arise
5. 5
   Exporting only the required site or data and deleting the rest of the unauthorized information
6. 6
   Using local controllers or dedicated hardware per client instead of multi-tenant cloud controllers

In their words

Unedited, most upvoted first, each linked to the thread it came from.