Code in web applications feels shoddily written, without a kind of bigger picture. For example if you display a product in the interface, why don't you have a d

Code in web applications feels shoddily written, without a kind of bigger picture. For example if you display a product in the interface, why don't you have a data structure representing a product? Or if you have a form for creating a new product, why don't you have a data structure representing that? The code feels shoddily written because it is shoddily written. Well written web applications do use these "data structures"; its just that they're called "models" rather than data structures.