This only describes the feature of connecting an XMPP client to facebook chat.
S2S federation means server-to-server. That is, use your XMPP account on your own server (such as prosody, as proposed above) to communicate with facebook users (on facebook's servers).
But that would go against fb's walled garden approach, so it's unlikely to come.
S2S federation means server-to-server. That is, use your XMPP account on your own server (such as prosody, as proposed above) to communicate with facebook users (on facebook's servers).
But that would go against fb's walled garden approach, so it's unlikely to come.