This tutorial demonstrates how to leverage Twilio's Programmable Messaging feature to set up an alerting system for Airflow jobs. It begins by setting up an Airflow instance locally, creating a DAG, and fetching data from the Star Wars API. The code then writes the fetched data to JSON files that can be used as fixtures for a database. To integrate Twilio with the Airflow Docker image, a new version of the image is created with the Twilio package installed, and an environment file is added to store the Twilio account SID and Auth Token. A callback function `on_failure` is defined to send SMS notifications when a task fails. The tutorial concludes by applying the changes to a running instance of Airflow and demonstrating how to use this feature for monitoring Airflow DAGs.