The History of Podcasting: From Radio to the Internet

The story of podcasting is usually told as a technology story, which misses the more interesting human story underneath it. The technology made podcasting possible, but what made it matter was that it gave a voice to people and perspectives that had been excluded from the expensive, gatekept world of traditional radio.

Radio is podcasting's obvious ancestor, and the connection goes deeper than the medium. The intimate, one-to-one feeling of someone speaking directly into your ear, the portability, the habit of listening during commutes and chores: all of these are things podcasting inherited from radio. What it did not inherit was the regulatory structure, the corporate gatekeeping, and the broadcast economics that determined who got to have a voice on the airwaves.

The technical preconditions for podcasting assembled slowly through the late 1990s and early 2000s. Broadband internet made distributing large audio files practical. MP3 players made consuming audio on the go convenient. RSS, the syndication format that became the backbone of podcast distribution, was adapted to include audio enclosures, meaning files that subscribers would receive automatically when a new episode was published.

The word podcast itself was coined in 2004 by journalist Ben Hammersley in an article for The Guardian, where he was looking for a name for the phenomenon of syndicated audio files delivered via RSS. It stuck almost immediately. Dave Winer, who had been working on RSS audio enclosures for years, and former MTV VJ Adam Curry, who built one of the first widely-used podcast clients, are often credited as the medium's earliest pioneers.

The first wave of podcasting, roughly 2004 to 2012, was primarily driven by tech enthusiasts and hobbyists who were excited about the idea of on-demand audio without the commercial structure of radio. Shows were rough, the equipment was basic, and the audience was small. But the model was demonstrably different from anything that had existed before: anyone could publish, and the audience could subscribe automatically and listen whenever they chose.

The medium's mainstream moment came in 2014 with Serial, a narrative true-crime podcast from the producers of This American Life that became a cultural phenomenon. It proved that podcasting could reach a mass audience, generate genuine cultural conversation, and produce content that competed with the best longform journalism anywhere. Serial demonstrated what was possible and brought millions of new listeners into the medium.

The years since Serial have seen podcasting transform from a hobbyist medium into a professional industry. Major media companies launched podcast divisions. Spotify spent billions acquiring podcast companies and exclusive shows. Advertising revenue grew into the billions annually. The independent podcaster now exists in a landscape shared with major corporations and well-funded studios, which has changed the competitive environment without diminishing the fundamental possibility of making something excellent without institutional backing.