Podcasts reach 10% share of ear, Amazon's building an SSP, & more.

Here's what you need to know today in the business of podcasting. Amazon is quietly building a publisher-focused ad product team to grow its $37 billion ad businessShifting Share of Ear: A nine-year comparison of radio and podcastsMattress Firm's Branded Podcast Drives In-Store Sales with iHeartMediaAnd for the rest of the news… Audacy debuts new study The Rise of the Cross-Platform Listener. Digiday breaks down key differences between Gen Z and Gen Alpha for brands, and American Public Media and Audacy have terminated their partnership a year early.