@Gargron @angristan None of these are actually what federations like Matrix or Mastodon look like. In these, the servers form a mesh where each server makes direct connections to all the other servers, and all clients connect to a single server.
Note that the "decentralized" illustration still has a central server.
@Gargron @angristan @vurpo To clarify, I meant that all clients connect to _one_ server, not that they all connect to the _same_ server.