Angular's component architecture

For me, the concept of directives from the first version of Angular changed the game in frontend UI frameworks. This was the first time that I felt that there was a simple yet powerful concept that allowed the creation of reusable UI components. Directives could communicate with DOM events or messaging services. They allowed you to follow the principle of composition, and you could nest directives and create larger directives that solely consisted of smaller directives arranged together. Actually, directives were a very nice implementation of components for the browser.

In this section, we'll look into the component-based architecture of Angular and how the things we've learned about components will fit into Angular.