What is WebRTC? & why it is?
WebRTC is an open-source project enabling plugin-free, Real Time Communications (RTC) in the browser. It includes the fundamental building blocks for high-quality communications such as network, audio, and video components used in voice and video chat applications.

These components, when implemented in a browser, can be accessed through a JavaScript API, enabling developers to easily implement their own RTC web app.
 
WebRTC is made up of three APIs:
1. GetUserMedia (camera and microphone access)
2. PeerConnection (sending and receiving media)
3. DataChannels (sending non-media direct between browsers)
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