LiveKit is an open-source platform that provides scalable, end-to-end infrastructure for building real-time audio and video (WebRTC) applications. It offers developers APIs and SDKs to easily embed high-quality live video, voice, and data features into their apps, supporting use cases like video conferencing, live streaming, and virtual events. The platform prioritizes developer control, interoperability, and deploying anywhere (cloud, on-premise, or edge).