In this chapter, we made an introduction of what Angular is. We explained that Angular and AngularJS are entirely different frameworks.
After that, we went through the basics of the structure of the framework: having a core with a minimalistic, immutable API and building on top of it with different modules in order to provide the best development experience possible.
Finally, we explained how Angular follows semantic versioning, which helps us understand why and when we should expect incompatible API changes in Angular.
In the next chapter, we'll focus on why AngularJS couldn't keep up with the constant evolution of the web, how Angular took advantage of the new, powerful browser API, and how it makes the development of large scale applications easier.
