Brian Lesser is CEO of AT&T’s advertising and analytics company. In this new role, Mr. Lesser is building an advertising and analytics business using the company’s customer data and growing content assets. He leads the development of advertising platforms across AT&T. The new company provides marketers with precise ad targeting capabilities and attribution aligned with premium, brand-safe content across screens, capitalizing on AT&T’s world-class TV and mobile customer insights and data. Brian previously served as CEO of GroupM in North America, the world’s largest media investment management organization, which applies data and technology to maximize the value of advertising for many of the world’s largest companies. In that role, he was responsible for overseeing strategy and operations for GroupM’s 16 leading agencies and specialist companies in North America, including Mindshare, Mediacom, Wavemaker, Essence and Xaxis. Brian has been recognized for his role in the ad industry’s shift to a more data and technology-driven model. In 2016, he was named to the “Crain 100,” a list of the top disrupters and change-makers in business. Brian was cited as one of “Five Advertising Execs to Watch in 2015” by The Wall Street Journal and, in 2014, he was named to Ad Age’s “40 Under 40” list.