Spotify has acquired Megaphone for $235 million, a leading podcast advertising platform, to invest in the growing industry of podcasting. With over 1.5 million podcasts and 34 million episodes available, Spotify believes that audio streaming, including music and podcasts, is the next frontier for listeners. This acquisition means that advertisers are recognizing the potential of podcasts and are ready to enter this world, giving podcast publishers more opportunities for monetization.