LiveKit, founded by Russ d’Sa and David Zhao, has gained significant traction since its launch in 2021, claiming over 500 paying customers and powering 25% of U.S. 911 calls. The open-source platform aids in seamless real-time audio and video transmission, attracting major clients like Spotify and Microsoft. Recently, LiveKit raised $45 million in a Series B funding round led by Altimeter, aiming to enhance its infrastructure and product development. With a run rate exceeding $10 million, LiveKit is poised to innovate further in the AI-native cloud communication space.