WebRTC
A peer-to-peer realtime communication framework for audio, video, and arbitrary data channels, standardized by the W3C and IETF. WebRTC defines an SDP-based offer/answer signaling model, ICE/STUN/TURN for NAT traversal, SRTP for media, and SCTP-based data channels. It powers video conferencing (LiveKit, Daily, Agora, Twilio Video, Zoom Web), live audio rooms, and low-latency game streaming.