In this chapter, we have analyzed the behind-the-scenes of Vue.js. You learned how data reactivity is achieved. You saw how Vue.js leverages Object.defineProperty getters and setters to propagate changes in the data. You saw an overview of the key Vue.js concepts, such as reusable components, plugins system, and state management with Vuex. We have bootstrapped the applications that we will develop during the next chapters.
In the next chapter, we will have a deeper look into the Vue's components system. We will use components in our applications.