In this chapter, we focused on networking with React. We started with promises that make asynchronous network calls easier to implement. It is a cleaner way to handle calls, and much better than using traditional callback functions. In this book, we are using the Fetch API for networking, therefore we went through the basics of using fetch. We implemented two practical React apps that calling open REST APIs and we presented the response data in the browser. In the next chapter we will look some useful React component that we are going to use in our frontend.