This document provides an overview of WebRTC, a set of technologies that enable real-time communication through web pages using JavaScript. WebRTC allows accessing a device's webcam and microphone through getUserMedia, establishing peer-to-peer connections between browsers using PeerConnection, and exchanging audio-visual streams and data between peers in real-time. The document outlines the key components of WebRTC, the supported codecs, and Mozilla's roadmap to integrate these technologies into Firefox and make them available by default in upcoming releases.