Default [Q] Direct online storage by default.

So lately I've been stuck on finding a way to use online storage, ideally my Google account, as a primary default storage source that syncs to my system software without the need of internal and external storage hardware. Is this possible? I'm pretty sure its just a matter of programing. I can't seem to find an app that does this. If this is possible, can someone please tell me how to do this? I hope this makes sense, thank you.