You've ever wonderd how or why to build a social network based on #xmpp?
Maybe not. But in case you're a dev. you might enjoy reading Timothée Jaussoin blog post, with experience of years developing a such a network.
It will also present reasons why xmpp was choosen and what the advantage/disadvantage over #activityPub are.
Be it for curiosity or inspiration, I highly recoment reading this blogpost:
https://nl.movim.eu/?blog/edhelas%40movim.eu
You're not a dev?
Take a look here:
https://movim.eu/