I've reported #Wire's lack of server>server federation as an issue, and explained how it could benefit them as a company. I mentioned that there might be hackers out there willing to help them make it happen. Let's see what they say: https://github.com/wireapp/wire/issues/266
... and in #GoodNews, #Wire not only confirms they're working on secure, federated chat, but #federation will be part of the #MLS protocol being standardized at the #IETF : "During this interim the proposal was made to include federation more strongly in the design considerations and the proposal was adopted as a future goal for MLS. Wire's goal has always been to achieve federation between different compatible backends and this brings us one step closer to that goal!" https://wire.com/en/blog/mls-meeting-summary/
The #Wire team are open to the idea of using #XMPP for federation between instances of the Wire server: "Please feel free to use this issue to post links / papers / reading material of any kind that might help us make a more informed decision" https://github.com/wireapp/wire-server/issues/631