@expertmanofficial

Sorry, I should have said at the start, this post is meant for server admins rather than general users.

Relays are a way of allowing small new servers to quickly discover lots of content from other servers. WIthout relays, the process of a server "noticing" posts can take a lot longer.

More info here: https://fedi.tips/which-posts-and-accounts-can-i-see-from-my-server/