Difference between authentication and authorization filters in aspnet-mvc5

Question

Why authentication filter is included in mvc 5? What is the major difference between authentication filter and authorization filter in mvc 5?

Answer 1

I found the following blog post: ASP.NET MVC 5 Authentication Filters

Basically its about separation of concerns.

Authentication: find out WHO issued a request.

Authorization: find out whether a known user is allowed to perform a certain action.