In an effort to engage with core customers, online fashion retailer ASOS is set to launch a weekly podcast focusing on female business owners. Having already rolled out a monthly print magazine, the brand hopes its newest venture can reach an even wider range of its Gen Y and Z audience.

Office chat platform Slack has become a Silicon Valley phenomenon, and in April 2015 was valued at more than $2.8 billion. With a number of its client businesses creating their own branded content, Slack's following suit with its own podcast, intended to promote its human side.

Averaging 2.2 million listeners per episode, NPR’sSerialpodcast is not just a cultural phenomenon, but a game-changer for a formally underappreciated medium. But why has the story of a 1999 murder in Baltimore struck such a chord? And what is it about the lure of audio that’s driving a talk radio revival?

Young people have always looked to music, filtered through radio DJs, for identity. For generations growing up with every song at their fingertips and algorithms replacing DJs, how is the medium being redefined, and what new roles can it fulfil?