"At the edge" means closer to the end user. Maybe you have a central server with the master database in Virginia, USA and edge servers with read-only follower d

"At the edge" means closer to the end user. Maybe you have a central server with the master database in Virginia, USA and edge servers with read-only follower databases near various big cities where your customers live. The point of edges is to provide lower-latency access due to their proximity. They also reduce load on the master server, but you don't need edges to do that.