In this last and final chapter of this book, we covered the best practices to be followed when working with React and Firebase. We also saw how we can monitor application performance with the use of different tools to reduce the number of bugs. We also talked about the importance of the structure of your data in Firebase Realtime database and discussed the dynamic data passing to React components. We also looked at other key factors, such as JSX, React Routing, and React PropTypes, which are the topmost usable elements in React App. We also learned that Redux helps a lot in maintaining the state of your Single Page Applications (SPAs).