[de_watcher]

As I understand, Discord server doesn't need to do audio processing, all mixing is done on the clients. So it would benefit from the "one-to-many" encryption, because currently it has to decrypt from one p2p connection and to encrypt to several p2p connections when someone talks (which breaks the end-to-end).

[jeltz]

Yes, that is what SFU is except there is apparently not support for one-to-many end-to-end encryption yet in the WebRTC protocol.