In this chapter, we've already added a project feature to our application. We've also added a tabbed interface to navigate the details of a project. However, there's still no way to navigate between projects. That's what we're going to change now. In this section, we will create components to build our main navigation. We will then integrate it and use it to navigate between all existing projects within the application:

We are designing our navigation components in such a way that we can quickly make use of them in any situation. For achieving this goal, we're going to look at a new concept within Angular, which is called content projection. With the use of content projection, we can achieve a new level of component composition.