Vistar Media is an advertising and marketing technology company that specializes in programmatic buying and selling of out-of-home (OOH) advertising. The company was founded in 2012 by a group of former Google executives and has since grown to become one of the leading players in the OOH advertising space. Vistar Media's platform uses advanced data analytics and machine learning algorithms to help advertisers and media owners optimize their OOH campaigns and reach their target audiences more effectively. The company's clients include some of the largest and most well-known brands in the world, and it has a reputation for delivering innovative and effective advertising solutions.