The Spring Boot application that we created in Chapter 5, Securing and Testing Your Backend, is required (GitHub: https://github.com/PacktPublishing/Hands-On-Full-Stack-Development-with-Spring-Boot-2-and-React-Second-Edition/tree/master/Chapter05), as is the React app that we used in Chapter 12, Styling the Frontend with React Material-UI (GitHub: https://github.com/PacktPublishing/Hands-On-Full-Stack-Development-with-Spring-Boot-2-and-React-Second-Edition/tree/master/Chapter12).
The code samples available at the following GitHub link will also be required to follow along with this chapter: https://github.com/PacktPublishing/Hands-On-Full-Stack-Development-with-Spring-Boot-2-and-React-Second-Edition/tree/master/Chapter13.