The almighty components

Components are the building blocks that will compose our app--it's the central concept of the Vue apps. They are small parts of the view, and they should be relatively small, reusable, and as self-sufficient as possible--structuring an app with components will then help maintain and evolve it, especially if it becomes large. In fact, this is becoming the standard method for creating huge web apps in an efficient and manageable way.

In concrete terms, your app will be a giant tree of smaller components:

For example, your app could have a form component, which could contain several input components and button components. Each one would be a very specific part of the UI, and they would be reusable all across the app. Being quite small in scope, they would be easy to understand and reason about, and thus easier to maintain (issue fixing) or to evolve.