Question

How can we make controller classes without suffixing “Controller” in the class name?

Answer 1

It is convention by default and is implemented in DefaultControllerFactory Class. You could create your own controller factory class that implements IControllerFactory and then use the code in Global.asax to make application use your controller factory

        protected void Application_Start()
        {
...
            ControllerBuilder.Current.SetControllerFactory(MyControllerFactory);
...
        }