WebRTC
In plain terms
A standard for real-time peer-to-peer audio, video, and data.
Going deeper
WebRTC enables browsers and apps to exchange media and data directly in real time without plugins. It powers in-browser calls.
Under the hood
Handles NAT traversal (STUN/TURN), encryption, and codecs; the basis of browser video calling.
Examples
Video calls, screen sharing, Google Meet, P2P data, live streaming.
Think of it like...
Like a direct phone line opened straight between two browsers.