Generally Action and RenderAction helper methods in MVC are used for rendering child views. But both the methods have different syntax and there are some differences between these two helper methods which we are going to see in this article.
Action and RenderAction helper methods are used to render child views.
The first difference between these two methods is: The Action method returns the child view as a string whereas The RenderAction method renders the child view in place.
Above code, calls the Result action method. In this case, it passes an anonymous object that contains values for the name of the child view to render for that section. The markup renders a "Announcement" section.
RenderAction() allows you to call a separate controller Action/View from your original View. With this approach you can move the business logic to a separate controller/action, and create its own View to render the output.
Here the first parameter is the Action method name and the second parameter is the controller name. So it calls the Result action method of the SecionController.