>Why is the hierarchy necessary? To make it easy to extract out reusable code in a consistent way. They aren't all necessary, though. If you have a very simpl

>Why is the hierarchy necessary? To make it easy to extract out reusable code in a consistent way. They aren't all necessary, though. If you have a very simple playbook it can go all in one file. Sort of like how python has classes (which correspond to roles), but you're not forced to use them.