Key takeaways
- DOOH (digital out-of-home) is advertising on digital screens in public places — from roadside billboards to screens in gyms, cafés and shopping centres.
- It's bought three main ways: direct from screen owners, through programmatic auctions, or on self-serve platforms with fixed pay-per-display prices.
- Entry costs range from £1,000+ minimums on traditional bookings to £8/day on self-serve platforms.
- The biggest buyer risk is unverified delivery — always ask how a platform proves your ad actually played.
What does DOOH stand for?
DOOH stands for digital out-of-home advertising: any ad shown on a digital screen in a public place. It's the digital half of out-of-home (OOH) — the industry term for advertising people encounter outside their house, which historically meant printed billboards, bus stops and posters. Swap the paper for a screen and it becomes DOOH.
That covers an enormous range of screens: motorway billboards, rail-station displays, screens above tills in shops, gym TVs between classes, waiting-room displays, lift screens in office blocks. If it's a screen, it's in a public or commercial space, and it shows paid content, it's DOOH.
How is DOOH different from a printed billboard?
- Many advertisers share one screen — content plays in a rotating loop, so a screen sells the same location to several brands rather than one poster for two weeks.
- Campaigns change in minutes — no printing or posting; creative is uploaded digitally and can start, stop or change same-day.
- Time-based targeting — run breakfast offers in the morning and happy-hour ads in the evening on the same screen.
- Measurable delivery — a digital play can be logged and, on the best platforms, independently verified.
How is DOOH bought and sold?
There are three main routes, and they suit different buyers:
- Direct booking — you contact the screen owner or their sales house and negotiate a block of time. How most premium billboards are still sold; usually involves minimum spends and lead times of days to weeks.
- Programmatic — automated buying, often via real-time auctions, through DSPs and ad exchanges. Powerful at scale, but built for agencies and big budgets. We cover it in what is programmatic DOOH?
- Self-serve platforms — pick screens on a map, upload creative, set a budget, go live. Fixed, transparent pricing rather than auctions. This is how Admitt works, with campaigns from £8/day.
What does DOOH cost?
It depends entirely on the route. Traditional bookings commonly carry £500–£2,000+ setup fees and £1,000+ campaign minimums. Self-serve pay-per-display pricing starts around £8/day for a single screen, and you pay per verified play rather than per block of time. The full breakdown — and what actually drives a screen's price — is in our cost guide.
Does DOOH actually work?
Out-of-home consistently ranks among the most trusted ad formats in industry studies — a physical presence signals legitimacy in a way a social ad can't, it can't be ad-blocked or skipped, and one play reaches everyone in the room. Its classic weakness was accountability: you paid for a schedule and trusted it ran. That's a solvable problem now — independent verification confirms each play before it's billed, which turns "trust us, it ran" into a checkable record.
The one question to ask any DOOH platform
"How do you prove my ad actually played — and do I pay when you can't?" If the answer is a report from the same media player that showed the ad, that's proof of play: the player marking its own homework. Independent verification — proof of display — is the difference between buying a promise and buying a fact.
Who is DOOH for?
Historically: brands with agencies and five-figure budgets. Today, self-serve platforms have opened it to local businesses — a café promoting lunch to the gym next door, an estate agent owning the screens in their own postcode. If your customers are physically near a screen, DOOH is now priced like a social campaign and bought just as easily.