Can you provide a use-case for when you would need to be able to easily switch (or potentially hot-swap) cloud storage? It sounds like some of the justification

Can you provide a use-case for when you would need to be able to easily switch (or potentially hot-swap) cloud storage? It sounds like some of the justification for ORM's; while it would be nice to have if it took no more time to integrate with that API its hard for me to see how it could justify extra effort in implementation/maintenance unless you have a concrete understanding of when you need it.