If route.IgnoreRoute ("{resource} .axd / {* pathInfo}"); is mandatory, why is it not installed once through IIS?

Question

I notice that it is routes.IgnoreRoute("{resource}.axd/{*pathInfo}");always configured whenever we create MVC applications.

If this is a required thing, why don't we configure it once through IIS settings, and not do it again and again?

Answer 1

No one said it was "required." However, it makes sense to be the default. And if you do not want this, you can delete it.