Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
I've been using a single, shared PST file on a local NAS box for years and years. The various family PC/laptops all pointing to the same location. Done this for each windows user and not had any problems with corruption of the PST files. The main constraint is that the PST file cannot be opened by two devices at the same time, but other than that, no problems. The solution is inherently limited as the NAS box is only available locally, so I'd be interested to see how folk get on with trying it out on onedrive, whilst it may not be technically supported, doesn't mean it won't work - unless someone can explain what the actual risk is (presumably around trying to access it whilst it's synching, at a guess?)