Relay architecture for message networks - nostr ,decentralized web nodes and inter wallet connection

#Relays have been powering telecom for decades. Messaging is a foundational topic for Sovereign networks. We have many transport protocols like a #didcomm #iden3comm, but we still need an end-to-end solution with permission and persistence in place. Decentralized Web Nodes #DWN offers a relay-based network topology with persistence. The same topology was proposed by #noster. So why #relays are so important?