Any given sub is only hosted on one instance, although moderators can be on other instances. I don’t know how moderation changes propagate across other instances. I hope someone else will explain that.
The tl;dr is there’s a set way of saying these specific users are allowed to send actions such as delete on these specific posts, and software that implements groups (communities, to lemmy) ideally implement it in the same way. Of course, someone could always make a software that denies all remote moderation actions for instance, so it’s always up to those implementing the AP spec.
Lemmy has a large userbase, so generally probably gets to decide a lot of these things, such as how moderators are listed when getting information on communities, and other software will have to choose to follow along to be able to work with the large userbase or raise concerns/give feedback if needed
How do moderators work if there are subs which are hosted on multiple platforms?
Any given sub is only hosted on one instance, although moderators can be on other instances. I don’t know how moderation changes propagate across other instances. I hope someone else will explain that.
In the end it’s mostly an agreement on how moderation actions should and are allowed to propagate for activity pub groups, which you can learn more about here https://codeberg.org/fediverse/fep/src/branch/main/fep/1b12/fep-1b12.md#group-moderation
The tl;dr is there’s a set way of saying these specific users are allowed to send actions such as delete on these specific posts, and software that implements groups (communities, to lemmy) ideally implement it in the same way. Of course, someone could always make a software that denies all remote moderation actions for instance, so it’s always up to those implementing the AP spec.
Lemmy has a large userbase, so generally probably gets to decide a lot of these things, such as how moderators are listed when getting information on communities, and other software will have to choose to follow along to be able to work with the large userbase or raise concerns/give feedback if needed
Thanks for the explanation and for the link!