A podcast is a series of audio episodes — and increasingly video ones too — that you can stream or download whenever you want, rather than catching live like radio. The word is a blend of “iPod” and “broadcast,” coined back in 2004, and that history hides the one feature that actually makes a podcast a podcast: it is delivered through an open feed that any app can read. That single technical detail is why you can start a show in one app, finish it in another, and never lose your place.
What makes something a podcast (and not just an audio file)
Plenty of audio lives online — a song on a streaming service, a voice note, a video’s soundtrack. What sets a podcast apart is distribution. A podcast is published as a feed: a running, machine-readable list of episodes that updates itself every time the creator posts something new. Apps watch that feed on your behalf, so a fresh episode simply appears in your queue without you hunting for it.
Because the feed is open rather than locked to one company, the same show can appear in dozens of apps at once. Spotify, Apple Podcasts, YouTube and smaller players are essentially search engines pointing at these feeds, not owners of the shows. That openness is the reason podcasting still feels less walled-off than most modern media, and why moving between apps rarely means losing access to your favourite shows.
How podcasting actually works: the RSS feed, in plain English
The engine behind every podcast is an RSS feed — a simple, standardised file that lists a show’s episodes along with their titles, descriptions, artwork and links to the actual audio files. You never see this file directly; your app reads it for you. When a creator publishes a new episode, their hosting service rewrites the feed, your app notices the change on its next check, and the episode shows up ready to play or download.
Three pieces work together behind the scenes:
- The host stores the audio files and generates the RSS feed. Think of it as the warehouse and the noticeboard combined.
- The directories — Apple Podcasts, Spotify, YouTube and the rest — index that feed so people can find the show by searching.
- Your app subscribes to the feed, checks it for updates, and handles playback, download and your position in each episode.
Nobody has to approve each episode, and no single platform controls the file. That decentralised design is why a podcast you follow keeps arriving even if one app disappears.
Podcast vs radio vs audiobook vs YouTube
Podcasts overlap with several older formats, which is exactly why the definition confuses people. Here is how they actually differ:
| Format | On demand? | How you get it | Typical length | Cost |
|---|---|---|---|---|
| Podcast | Yes | Open RSS feed, any app | A few minutes to a few hours | Usually free |
| Radio | No (live) | Broadcast or stream on a schedule | Fixed slots | Free |
| Audiobook | Yes | A single file bought per title | Many hours, one work | Paid per book |
| YouTube series | Yes | One platform, closed system | Any | Free (with ads) |
Many radio programmes now release a podcast version after they air, and plenty of podcasts post a video edition to YouTube. The lines blur, but the open feed is still the thing that makes a podcast portable in a way the others are not.
The main types of podcasts
“Podcast” describes the delivery, not the content, so the range is enormous. Most shows fall into a handful of formats:
- Interview — a host in conversation with a different guest each episode.
- Solo or monologue — one person teaching, commenting or storytelling directly to the listener.
- Co-hosted chat — two or more hosts riffing on a theme, the most common casual format.
- Narrative and documentary — tightly scripted, edited storytelling, often released in seasons.
- Fiction — audio drama with actors, sound design and a plot, the modern heir to radio plays.
- Panel and roundtable — a rotating group debating news or a niche.
Because anyone can publish, podcasts cover almost every subject imaginable, from true crime and history to cooking, finance and extremely specific hobbies.
How to start listening, on any device
You do not need special hardware or a single “correct” app. If you have a phone, you already have a podcast player. The usual routes are:
- Dedicated apps such as Apple Podcasts or Pocket Casts, built purely for listening and managing subscriptions.
- Music apps that also carry shows — our comparison of Spotify versus Apple Music covers how each handles podcasts alongside songs.
- YouTube, now a major podcast destination; if you watch a lot there, our look at whether YouTube Premium is worth it is relevant for ad-free, background play.
- Your browser, since the open feed means many shows play straight from a web page.
For listening on the move, a wireless connection usually does the work — if you are new to that, see what Bluetooth is and how to pair a Bluetooth device, or the quick fix for resetting AirPods when earbuds misbehave. Downloading episodes for a flight or commute is the other big perk; if storage gets tight, here is how to free up space on an iPhone.
How to start your own podcast
Launching a show is more accessible than most people expect. At a minimum you need a decent microphone, software to record and edit your audio, and a podcast host that stores your episodes and generates the all-important RSS feed. An AI podcast editor such as invideo can simplify the production stage by helping sync recordings, remove fillers and silences, clean voices, and prepare clips for social platforms.
Once you publish, you submit that feed to the major directories, and within a day or two your show appears in listeners’ apps. Beyond the basics, planning a clear theme, a consistent release schedule and good audio quality matters far more than expensive gear; recording in a quiet, soft-furnished room does more for sound than a costly microphone in an echoey space. Write a short, searchable title and description for each episode so people can find you, start simple, stay consistent, and improve as you go.
How podcasts make money
Most podcasts are free to listen to, which raises the obvious question of how anyone pays for them. The common models are host-read advertising and sponsorships, paid subscriptions that unlock bonus or ad-free episodes, listener donations and memberships, and — for larger shows — exclusive platform deals, live events and merchandise. For a deeper look at how the biggest audio platform turns listening into revenue, see how Spotify makes money. The economics are why a show you enjoy keeps appearing week after week, and why so many creators treat podcasting as a genuine business rather than just a hobby.
