Learn how to optimize large-scale React applications for better performance in this conference talk from React Summit 2020. Discover tools and techniques to analyze your React apps, identify solvable issues, and implement effective state management and asynchronous handling strategies. Explore performance testing methods, including Lighthouse and Profiler, and gain insights into network performance optimization. Follow along as the speaker demonstrates these concepts using an initial Create React App, then shows how to clean up and improve its performance. Acquire valuable skills to ensure your React applications remain responsive and efficient as they grow in complexity and scale.