Lantre Barr presented on WebRTC and discussed its history, key features, use cases, and production applications. Some of the applications discussed include Amazon Mayday Button, Comcast X1 Platform, and Esurance Video Appraisal. Barr emphasized building with WebRTC rather than debating details, and discussed acquisitions like Snapchat acquiring AddLive to utilize WebRTC. Barr concluded by sharing free WebRTC services and resources for learning more.