=` The key points covered in this text are that WebRTC enables real-time peer-to-peer communication between browsers, and it requires servers to handle some work for us. The three main parts of the application are network configuration, presence, and signalling. To build a WebRTC application, you need to use tools like Node.js, Socket.io, and Twilio's NAT Traversal Service. You also need to set up a server to handle the signalling process and relay messages between browsers. The client-side code sets up peer connections, requests media streams, and handles ICE candidates and offer/answer negotiations. Additionally, you can implement features like video streaming, audio conferencing, and data channels using WebRTC.