In this chapter, we learned about user management, user authentication and access filtering.
User management means providing the UI for adding, editing, viewing users and changing their password.
Authentication is when a user provides his login and password and you decide whether these credentials
are correct. ZF3 provides the special service called
AuthenticationService that you can use for this purpose, but
first you need to implement an authentication adapter.
Access filtering allows access to certain pages to authenticated users only. You can implement access filtering with the help of an event listener.