Decoupling should be done at all levels so that the frontend is not excluded from this. Instead of thinking end to end in one view, we divide things and create features in isolation. These features are specialized in doing one thing and one thing only. This makes the individual features experts in their isolated domain instead of trying to fit everything in a wider feature. This creates something that is more decoupled and more maintainable. It's easier to change each of these features so that they become even better at what they do without worrying about breaking other features.

Typically, you could divide a page, as shown in the following figure:

Every box representing a section of the system typically holds a feature. Each individual feature is put together in the larger composition.

One could create the entire preceding composition in one page and one code file, but it would run the risk of being highly coupled together and changing anything could easily break things one...