Three terms thrown around as if they compete. They don’t — they’re different delivery and business models, and a smart operator uses all three. Here’s the operator’s version.

The confusion is understandable because the words overlap, but the distinctions are real and they change how you make money. Let’s separate them cleanly.
| IPTV | OTT | FAST | |
|---|---|---|---|
| Pays | Subscription | Subscription / hybrid | Advertising |
| Reach | Your network | Any device | Any device |
| Quality control | High (managed) | Best-effort | Best-effort |
An operator doesn’t pick one. IPTV/managed delivery is the reliable core for your subscribers; OTT apps extend that to every device and beyond your network; FAST adds an ad-funded free tier that can acquire and monetise viewers who won’t subscribe.
Run managed IPTV for your core subscribers, ship OTT apps for reach and second screens, and consider FAST channels to monetise the free/ad audience — all on one platform and one subscriber system, as covered in linear vs VOD strategy.
Talk to a team that runs a live operator, not just sells software.