They allow you to match the URL in a series of steps. Where each step can be static (ie "/foo") or dynamic (ie /images/). You can then easily add features to t

They allow you to match the URL in a series of steps. Where each step can be static (ie "/foo") or dynamic (ie /images/). You can then easily add features to this structure, like route middlewares at every level in the tree; just apply them while doing the routing. This also allows you to match route variants easily, ie "foo" and "foo/" are the same, so are "/" and "/index.html". In the same way you can extract query parameters for middleware/handler use.