This sounds similar in practice (not implementation) to AeroFS [1] which is a peer to peer syncing service. Just make one of your peers something cloud-based an

This sounds similar in practice (not implementation) to AeroFS [1] which is a peer to peer syncing service. Just make one of your peers something cloud-based and reliable. Very interesting space! [1] https://www.aerofs.com/ https://www.aerofs.com/