[donohoe]

If ActivityPub is “simple” then that’s a recent’ish development. It used to be a mess.

I would imagine AT gets easier to use/setup given time too.

[synthetic-echo]

They said comparatively simple. As in, simple compared to AT

[zimpenfish]

You can do a basic[0] AP server in a single small (64k) PHP file[1].

[0] Single user, admittedly, but if we're talking about protocol simplicity, that's the nub.

[1] https://shkspr.mobi/blog/2024/02/activitypub-server-in-a-sin...