An SFU routes many live streams efficiently without re-encoding them all, which makes group calls scale. Because every stream passes through it, the SFU is the place to run server-side AI once for everyone — shared captions, moderation, recording.
Definition
A media server that receives each participant's stream and forwards it to others, the standard backbone of group video calls and a natural spot for AI.
An SFU routes many live streams efficiently without re-encoding them all, which makes group calls scale. Because every stream passes through it, the SFU is the place to run server-side AI once for everyone — shared captions, moderation, recording.
Also known as
selective forwarding unit, media server