In this final coding chapter, we brought everything together by finishing our code and integrating the frontend React app with the backend GraphQL server. We've learned an enormous amount in this chapter and this book as a whole. You should feel proud of how far you've come.
My suggestion would be, before you move on to the final chapter, to try and make changes to the app. Come up with your own ideas for features and try building them. Ultimately, this is the only way you will really learn.
In the final chapter of this book, Chapter 17, Deploying an Application to AWS, we will learn how to deploy our application to Linux and NGINX on the Azure cloud.