Angular CLI makes it to add new capabilities to your application via the use of CLI extensions. There are many CLI extensions available; some of them have been built by the Angular team, but many have been created by the awesome Angular community.

Let's say you want to add the Progressive Web App capability to your app—you can just run the following command:

> ng add @angular/pwa

This command adds all the dependencies and file changes to the project, which will make it a basic Progressive Web App.

In this section, we have seen that Angular CLI can do a lot, from scaffolding the application to generating files, serving the application, building the application, and so on, with a lot of different options. This can become overwhelming for beginners to remember. In the next section, we will see another tool that can help new Angular developers to use Angular CLI without remembering all the different commands.