Airbnb and Lyft have transformed their respective industries in recent years using data science as their guiding light. In episode 9 of our DataHack Radio series, Dr. Alok Gupta gave us some very interesting insights into how Airbnb and Lyft use data science. For instance, did you know that Spark is Airbnb's machine learning tool of choice? You will learn a lot in this podcast about how a data science leader thinks about challenging problems, and how leading tech start-ups scale up their operations from the ground up.