This tutorial explains how to enable communication between child and parent components in a web application using event callbacks. It demonstrates the process of adding an event callback parameter in the child component and modifying the parent component to handle this callback. The tutorial also covers the implementation of an async method to invoke the event callback, ensuring that changes are reflected without refreshing the browser. The key takeaway is understanding how event callbacks facilitate communication between components.

How does the application ensure that the movie list is updated after a new movie is added?

What is the significance of the 'on save' method in the communication between components?

What are the key components involved in the event notification process described in the tutorial?