CRDTs can still involve a server, just not necessarily in the middle of everything. Consider you could have connections authenticated by the server, for one. E

CRDTs can still involve a server, just not necessarily in the middle of everything. Consider you could have connections authenticated by the server, for one. E.g., someone connects peer to peer to you and claims some privilege etc., you could use the server to verify their claim. Also, I don't think CRDT necessarily implies peer to peer, as you can use a central server for message passing, but keep the CRDT model for resolving the current state on both server and client.