In this session, we'll dive into the performance improvements introduced in React 19 and compare them with React 17 using a real-world app. We'll explore the impact of key features such as Concurrent Rendering and the React Compiler, examining how they enhance rendering efficiency and responsiveness. By comparing the performance of the same app in React 17 and React 19, we’ll uncover the tangible benefits of upgrading, focusing on metrics such as load times, reactivity, and overall performance under heavy UI demands. Join me to see how React 19 can help you build faster, more scalable applications!