Think of an "instance" as a server (or servers) where Lemmy is being hosted. So, lemmy.world is hosted by one entity while lemm.ee is being hosted by another. They just have different servers, but they can interact with each other.
Think of an "instance" as a server (or servers) where Lemmy is being hosted. So, lemmy.world is hosted by one entity while lemm.ee is being hosted by another. They just have different servers, but they can interact with each other.