Many of the most high-profile podcasts today, however, are produced by highly-skilled media professionals, some of whom are employees of media corporations. Legacy radio and new media platform giants like Google, Apple, Amazon, and Spotify are also making big (and expensive) moves in the medium by acquiring content producers and hosting platforms. This book focuses on three major aspects of this transformation: formalization, professionalization, and monetization. Through a close read of online and press discourse, analysis of podcasts themselves, participant observations at podcast trade shows and conventions, and interviews with industry professionals and individual podcasters, John Sullivan outlines how the efforts of industry players to transform podcasting into a profitable medium are beginning to challenge the very definition of podcasting itself.