What Is Programmatic DOOH Advertising? A Guide for India

What is programmatic DOOH advertising?

DOOH stands for digital out-of-home. It covers the screens you pass once you leave the house: airport terminal walls, metro concourse displays, mall atrium screens, office lobby panels, lift screens in housing societies and large LED faces at road junctions.

Programmatic DOOH is a way of buying time on those screens through software. You do not call a media owner, haggle over a site and send a printed flex. You set up a deal in a demand-side platform (DSP) such as DV360, pick the screens and hours, and the system plays your ad and logs every play.

Three parties sit behind each buy:

1. The media owner, who runs the screens, often under a concession from an airport operator, a metro corporation or a mall.
2. A DOOH supply platform, which brings many screen networks together and offers their slots to buyers.
3. The DSP, where the buyer sets the deal, budget, hours and creative, and later reads the delivery numbers.

This guide is about how the model works and how it stacks up against a printed hoarding. If you already know you want screens and need to see the venues we buy and how we compare networks, go to our programmatic DOOH advertising page.

How does programmatic DOOH compare with a traditional hoarding?

Seen from a car, a large LED screen and a printed hoarding look like the same thing. Commercially they are different products. A hoarding is a site you rent. A programmatic screen is a share of airtime, and what you pay for is the crowd in front of it.

There is a middle option, and it causes confusion. Plenty of digital billboards in India are still sold as a fixed slot for an agreed number of weeks at a flat fee. The screen is digital, but the buying is not. It becomes programmatic DOOH only when the same screen is offered through a supply platform, bought play by play and priced on each play's estimated audience.

What does a hoarding still do better?

A printed hoarding is yours around the clock, with no other brand sharing the face. That matters for a builder who wants the same project message on a landmark junction for a full quarter, or a jeweller who wants a fixed sign on the road leading to the showroom.

Where does programmatic DOOH come out ahead?

Programmatic wins on flexibility and accountability. A two-wheeler brand launching in Pune can run digital billboards on the main commuter roads in the mornings for three weeks, pause, then repeat in Nagpur with a Marathi headline. A quick-commerce app can show breakfast offers only before 11 am. Every play is logged, so you know what ran instead of trusting a photograph taken on one afternoon. And because the buy sits in the same DSP as your YouTube and OTT lines, screens and phones can be planned together.

How does a programmatic DOOH ad get from a deal to a screen?

1. Every screen runs a loop. Take a loop of eight 15-second slots: it lasts two minutes, so one slot plays 30 times an hour, or 360 times across a 12-hour day. Your share of the loop decides how often you appear.
2. The media owner connects its screens to a supply platform and shares their locations, venue types, operating hours and audience estimates.
3. Buyer and seller agree a deal, with the screens, dates and either a fixed price or a floor agreed before anything runs. In DV360 that usually means Programmatic Guaranteed (PG) or private deals. PG fixes price and volume up front, a preferred deal fixes the price, and a private auction still runs a real-time auction among invited buyers above the seller's floor.
4. The publisher reviews your creative. Screens sit in public view, so each file is approved before it can play.
5. Your ad plays, and the play is logged against the screen and the time.
6. The network converts each play into estimated viewers, and that is what you pay for.

What is an impression multiplier?

On a phone, one impression means one ad shown on one device. A screen on a metro concourse at 9 am is seen by a crowd at once. Networks therefore estimate how many people can see a given screen in a given hour, from sources such as passenger and ticket counts, footfall studies or road traffic surveys. That estimate is the impression multiplier.

The multiplier moves through the day. Here is an illustrative case for one screen at a busy Delhi Metro interchange, with the same 30 plays an hour:

Same screen, same number of plays, yet the morning hour costs four times as much because four times as many people are estimated to be in front of it. That is the logic of paying a CPM rather than a fee per play: you pay for the crowd, not the airtime. It is also why a metro advertising plan is usually built around the rush hours.

DV360 reports this as two numbers. Served impressions count the plays. Publisher impressions apply the multiplier. Over a whole campaign, 10,000 plays at an average multiplier of 40 give 4 lakh publisher impressions, and at ₹400 CPM that comes to ₹1.6 lakh.

DV360 also shows a Publisher CPM. Its ordinary CPM is worked out on served impressions, so check a DOOH rate like the ₹400 here against Publisher CPM. Spread the same ₹1.6 lakh over 10,000 served impressions and the ordinary CPM reads ₹16,000, which looks alarming until you see what it is built on.

Why do multipliers differ between networks?

Each network builds its estimate its own way. One may count everyone inside the venue, another only people within sight of the screen. The data may come from last month's passenger figures or from a study done two years ago. Before comparing two networks, ask what the source is, how recent it is and whether it changes by hour.

A low CPM on a generous multiplier can cost more per real viewer than a higher CPM on a strict one. So before you put a DOOH rate into a CPM calculator next to a mobile rate, remember that the two are not like for like.

How many viewings does a DOOH budget turn into?

A DOOH budget does not buy a number of people. It buys estimated viewings, worked out from the CPM and the multiplier, and most venue networks price between ₹250 and ₹700 per thousand estimated viewers.

Say a fintech app wants commuters and office workers in Bengaluru for three weeks with ₹5 lakh. The split below is illustrative.

Those 11.5 lakh are viewings, not people. A commuter who passes the same screen twice a day, five days a week, for three weeks is counted 30 times. That helps recall, but never report 11.5 lakh as reach.

When you build a programmatic media plan with YouTube and OTT alongside, keep DOOH out of the unique reach sum and report its viewings on a separate line.

What does DOOH look like inside DV360?

DV360 treats digital out-of-home as its own insertion order and line item type. Google's DV360 help on DOOH sets out how it behaves, and a few points shape every plan.

• The deal comes first. It is agreed with the seller, then imported by deal ID or found in DV360's Marketplace. Google lists DOOH sellers such as Perion (Hivestack), Magnite, Place Exchange, Ströer, VIOOH and Vistar. Which of them carry Indian screens is checked city by city.
• Creative is kept simple. Only DV360-hosted static images and standard video files are supported, so HTML5 and rich media are out. Editing a creative after it is assigned voids the publisher's approval.
• Delivery takes a while to start. Google says DOOH ads can take an average of 24 hours to begin delivering, so do not plan a launch for the morning of an event.
• Location is best set through the deal. IP-based geo targeting only works if the seller passes each screen's correct IP address, and Google warns that some impressions may serve outside the targeted area.
• The audience numbers are the seller's. DV360 does not measure DOOH audiences itself, which is why the multiplier method matters.

What is proof of play, and how is it different from an impression?

Proof of play is the record that your ad actually ran: each play logged with the screen, venue and time. It answers one question. Did the ad run where and when we agreed?

An impression answers a different question: how many people could have seen it. That number is an estimate built on the multiplier. Good DOOH reporting keeps the two apart, so a delivery dispute can be settled from the logs without arguing over audience models.

Neither tells you whether the campaign worked. For that, compare branded search, site visits or store footfall in campaign cities against similar cities without screens. Some networks also offer footfall or brand lift studies, usually on larger budgets. Agree the proof of play format before launch, not after.

What do people often get wrong about programmatic DOOH?

"Programmatic means anyone can bid on any screen at any moment." Not usually. Most DOOH in DV360 is bought through deals set up with the seller in advance. A private auction still has real-time bidding, but only among invited buyers and above a floor the seller has set. Programmatic describes how the buy is set up, delivered and logged.

"The screen knows who is watching." It does not. You target by place and time, and audiences are aggregated estimates, which is why DOOH suits categories where personal targeting is restricted.

"Every screen can be bought this way." Some terminals, metro lines and large takeovers are still sold only by the concessionaire, and supply varies from city to city.

"More cities means more impact." Ten cities on a small budget leave each screen with a thin share of the loop. Two or three cities with a real presence will do more.

Next step

When you are ready to buy, our DOOH advertising page lists the venues we buy, with indicative rates and minimums, and how we compare networks for your cities. Our team can also check which screens are live on programmatic supply for your dates. To see how screens sit next to YouTube, OTT and mobile within one budget, ask for a free media plan.