Cloud providers are (counter to intuition about their lock-in incentives) improving the space of this. Lots of tools now allow configuring storage by just point

Cloud providers are (counter to intuition about their lock-in incentives) improving the space of this. Lots of tools now allow configuring storage by just pointing to various cloud stores, most often a S3 compatible api, not exclusively though. K8s PersistentVolume is another decent shot at storage abstraction, only a bit raw. Finally, more and more tools expect you to have a Postgres they can plug into as backend. All above assumes you want to treat the library data as a big unknown blob. Once data start being corrupted and need bespoke repair, things are less fun. Access and retention is another fun rabbit hole. Data is complicated.