“And to power the back end of this product, we started looking at a lot of different open source technologies. um And the folks at Airbnb, which at the time was known as one of the leaders of building great data technologies and giving it and open sourcing it, um had put out this tool called Apache Airflow. um And we actually started using Apache Airflow to power the back end of our other product. um It was a product that helped you get clickstream data into your data warehouse.”