The "use client" directive introduces a new dimension to bundling. Allowing developers to use the same language and JSX component model to write a single application that runs across the server and client, and replacing network synchronization code in multiple languages and frameworks with simple components and props. In this talk, we'll explore what use client is, why it exists, how it works, and clarify some common misconceptions. 🗣 Speaker Bio Delba de Oliveira works a Developer Advocate for Next.js. She's passionate about teaching web development and explaining complex web concepts through diagrams, animations, and docs. Get your tickets for React Universe Conf 2025: https://hubs.li/Q02VZj6R0 Check out more about React Universe Conf: https://hubs.li/Q02R36jy0 Visit the organizer's website: https://hubs.li/Q02R39FR0 Follow us on X to stay up to date: https://x.com/reactuniverse_