Remember the days when you could turn on Google Ads and the customers would come flowing in the door? Those days are gone and Lewis Rothkopf walks us through techniques and ways to spend smart and measure often. Lewis has led global businesses and revenue lines at the world's foremost marketing, ad tech, and media companies. Lewis has contributed to the demand-side global inventory supply chain, as well as mobile, video, and advanced TV, streaming audio, digital out of home (DOOH), social, and emerging channels businesses.