When I post a toot, what happens? What steps does my server take to send that toot to other servers? When people read that toot, what steps does their server take? Detailed all the way down to http calls and json-ld.
I don't mean what happens for Mastodon (or Pleroma), I mean for any fediverse-compatible server. I also don't mean ActivityPub or Lightpub, I mean what happens today, in reality, not what happens in some idealized ivory tower whitepaper.