History of Podcasting
Contents
Trevor L Taylor hosts Hard Truths for a Soft World, a show that belongs to a form with a short but crowded history. Podcasting began as a technical footnote, picked up a name from a newspaper feature, went mainstream through a music store, and only later became a business large enough to attract newspapers, streaming services and television companies. This entry traces that path era by era.
A tag in a feed
The technical root of podcasting is RSS, a format that lets a website publish a list of its latest items for software to collect. The RSS 2.0 specification hosted by Harvard’s Berkman Center1 records that version 0.92, released in December 2000, introduced new features to the format, and it defines an optional element called the enclosure. An enclosure attaches a media file to an item, with three required details: where the file lives, how large it is, and what type of file it is.
That small element did the essential work. Once a feed could point at an audio file, software could notice a new episode and download it automatically, without the listener visiting a website. Everything that followed was built on that idea of subscription by feed.
The arrangement also fixed a division of labor that still defines the medium. The publisher hosts the audio files and maintains the feed. The listener chooses an application, sometimes called a podcatcher in the early years, which checks the feed on a schedule. Neither side needs the other’s permission, and no central company sits between them. That neutrality made the format cheap to adopt and hard to control, two qualities that shaped every later chapter.
Naming the thing
By early 2004 the pieces were in place. In a Guardian feature titled Audible revolution2, the technology writer Ben Hammersley pointed to MP3 players such as the iPod, cheap or free audio software, and the established habit of weblogging. He wondered what to call the resulting wave of amateur radio, and offered audioblogging, GuerillaMedia and podcasting as candidates.
The last of those stuck. It blended the name of Apple’s player with broadcasting, even though a podcast never required an iPod. Within two years the word had moved from technical circles into the dictionary.
Hammersley’s piece is useful as a snapshot of the moment before the name became a habit. The shows he described were mostly talk recorded by individuals, published alongside a weblog, and aimed at small audiences who already followed the writer. Few of them resembled radio programs. What they shared with radio was the voice, and what they added was the ability to listen at any time.
The iTunes era
The decisive step toward a mass audience came from Apple. In June 2005 the company announced that iTunes 4.9 would build podcasts directly into its software3, letting users subscribe to more than 3,000 free shows and receive each new episode automatically on their computer and iPod. Steve Jobs called podcasting the next generation of radio.
Recognition followed quickly. Macworld reported that the editors of the New Oxford American Dictionary chose podcast as their Word of the Year for 20054, ahead of runners up such as bird flu. Usage was still modest, though. A Pew Research Center survey5 found that 12 percent of American internet users had downloaded a podcast by late 2006, up from 7 percent earlier that year, and only 1 percent did so on a typical day.
The iTunes directory did more than make subscription easy. It became the main place where new shows were discovered, ranked and reviewed, and for years a listing there was one of the most valuable assets a growing podcast could have. The directory did not host the audio itself; it read the same public feeds as every other application. That design kept the medium open even as one company became its front door.
Serial and the breakout
For most of the next decade podcasting remained a habit of enthusiasts. Subscribing often meant copying feed addresses or syncing a device to a computer. Smartphones removed that friction, and in late 2014 the medium found its first true hit.
The New York Times described Serial, a spinoff of the public radio program This American Life, as podcasting’s first breakout hit6. It had been downloaded or streamed on iTunes more than five million times and averaged over 1.5 million listeners an episode. The host of This American Life said his own program took four years to reach a million listeners; Serial did it in about a month.
The effect on the industry was immediate. Six months later The Hollywood Reporter counted nearly 40 million Americans listening to a podcast each week7, choosing among roughly 285,000 shows, as programmers rushed to build more.
Money and exclusives
Success drew large companies. In 2020 the New York Times Company agreed to buy Serial Productions, a purchase TechCrunch reported at about $25 million8. The same year Spotify signed The Joe Rogan Experience to an exclusive licensing deal that The Wall Street Journal reported as worth more than $100 million9, bringing the show’s full back catalogue to the service.
Exclusives marked a change in the medium’s character. A podcast had always been something anyone could publish and any app could play, because the feed was open. Exclusive deals tested whether listeners would follow a show into a single app, and whether the open model could survive the arrival of serious money.
Video, streaming and the present
The latest era blurs the line between audio and video. Edison Research’s Infinite Dial survey reported in 2025 that 70 percent of Americans 12 and older had listened to a podcast10 and 51 percent had watched one, that 55 percent were monthly consumers, and that YouTube had become the service weekly listeners use most often. A form that began as an audio file attached to a feed is now as likely to arrive as a filmed conversation on a video platform.
Some things have not changed. Most shows still publish through an RSS feed with an enclosure, the same mechanism described in the original specification. Independent hosts, public broadcasters and global media companies share that infrastructure, and a new show can still reach listeners in almost any app without asking anyone’s permission. That is the enduring paradox of podcasting history: the open feed outlasted every attempt to own the medium, and it remains the ground on which shows such as Hard Truths for a Soft World are built.
