In this chapter, we saw how we can easily customize a web application created using JHipster. We also learned about Angular and Bootstrap when we customized our product listing page. In addition to this, we saw how to secure our application with role-based authorization using Spring Security. We also learned about Spring Data and used Git to manage our source code properly. We saw our application evolving with business logic and becoming more user-friendly. In the next chapter, we will see how we can integrate continuous integration with our application using Jenkins.