Podcasts are bigger than ever, with fans in 50 percent of American households according to the latest research by Nielsen. This media channel has become so big that the IAB is hosting the “Podcast Upfronts” in New York this week. And the way people interact with mobile, streaming media and IoT is only making podcasts and other types of audio content more important. For example, Vogue just announced a deal with Google Home for users to explore behind-the-scenes audio content from its magazine online via what they’re calling “conversational” interactive audio. What’s the opportunity for marketers?