XMPP as a product was growing and doing fine until it completely failed to operate in the model of modern smart phones that have to use push services to stay co

XMPP as a product was growing and doing fine until it completely failed to operate in the model of modern smart phones that have to use push services to stay connected. This Reddit link has some good descriptions of the limitations: https://www.reddit.com/r/xmpp/comments/np8i2l/why_does_it_seem_like_xmpp_doesnt_work_well_on_ios/ https://www.reddit.com/r/xmpp/comments/np8i2l/why_does_it_se.... In a world where mobile matters first and foremost xmpp just kinda died. And facebook wasn’t unique in this, google killed their s2s support around the time they transitioned to hangouts as well. Fact is facebook probably still runs one of the largest ejabberd instances (but I’m not certain what runs WhatsApp these days actually).