Food delivery has become a $100 billion-plus market. Uber Eats is the fastest growing U.S. meal delivery service, posting a $6 billion bookings run rate within just four years of getting started, according to Uber CEO Dara Khosrowshahi. In 15 major U.S. cities, Eats has surpassed GrubHub, previously the unchallenged delivery leader. It shouldn't come as a shock: The company's growth is spearheaded by brand recognition, a loyal customer base, and a full-throttle focus on the advantages of machine learning and artificial intelligence across their entire business. At VentureBeat's Transform 2018, Uber director of product Jairam Ranganathan noted that on the order of more than a billion dollars a quarter of gross sales are brought in by AI that wouldn't have otherwise been posted.