What is DOOH advertising? A guide to digital out-of-home in India

Digital out-of-home, or DOOH, is any advertising shown on a digital screen in a public place. That includes LED billboards on highways, screens in malls and airports, displays in metro stations and screens inside shops. It uses the same streets and the same audiences as traditional outdoor advertising. What changes is that the message can be scheduled, swapped and measured in ways a printed hoarding cannot.

This guide explains how DOOH works in India, how big it is, how it is bought, and when it is the right choice over static formats.

DOOH and static OOH: the core difference

A static hoarding shows one creative for the full booking, usually a month or more, and changing it means printing and mounting a new flex. A DOOH screen runs a loop. Your advertisement is one of several slots repeating through the day, and it can be changed remotely.

That difference has practical effects:

• Time-of-day messaging. Breakfast offers in the morning and dinner offers in the evening, on the same screen.
• Short bookings. Campaigns can run for days rather than months, which suits launches, sales and events.
• Several creatives at once. Messages can be rotated by location or day without new production costs.
• Contextual triggers. Creative can respond to weather, traffic, air quality or live scores through data feeds. GroupM India’s Ajay Mehta has described API-linked messaging of this kind as moving from case study to mainstream (exchange4media).

The trade-off is share of voice. On a static site you own the face. On a screen you share it with other advertisers in the loop, so slot length, loop length and the number of advertisers per loop all matter.

How big is DOOH in India?

Estimates vary by source and definition, so it helps to read them side by side.

Source	What it says
FICCI-EY M&E report (2026)	Digital OOH contributed about 18% of OOH revenues in 2025, up from 7% in 2023. DOOH is expected to reach 25% of OOH revenues by 2028 (summary)
Signpost India investor presentation (Nov 2025)	DOOH was about 12% of OOH in 2024, projected to reach 17% by 2027, growing at a 24.3% CAGR (PDF)
Pitch Madison Advertising Report 2026	Total OOH spend was ₹4,835 crore in 2025, up 4%, with DOOH described as central to OOH’s integration with digital (exchange4media)

The sources disagree on the exact share, but they agree on the direction: digital is the fastest-growing part of Indian OOH, starting from a small base.

Where the screens are

DOOH inventory in India sits in a few clusters:

• Roadside LED. Large-format screens at major junctions and on flyovers in the big metros.
• Transit. Screens in metro concourses, on platforms, at airports and at railway stations, where people spend time waiting.
• Malls and multiplexes. Atrium screens, lift lobbies and food courts.
• Corporate parks and residential societies. Lift and lobby screens that reach office workers and households.
• Retail stores. Screens at entrances, along aisles and at checkout. This is often called in-store retail media.

Retail is the most interesting category for many brands, because the screen sits a few metres from the shelf. The wider retail media market is growing fast: PMAR 2026 puts ecommerce and retail media advertising at ₹10,257 crore in 2025, up 27% (PMAR 2026 via Roastbrief). That figure is mainly online. In-store screens are the physical counterpart, reaching shoppers at the moment they choose.

Our own RetailVision network is an example: about 100 screens across 15+ Spencer’s Retail stores in Kolkata.

How DOOH is bought

There are two main routes.

Direct (guaranteed) buying. You book specific screens or networks for fixed dates with the media owner, at an agreed number of slots per loop. This is still the most common route in India, and it suits campaigns that need certainty about where and when they run.

Programmatic DOOH (pDOOH). Screens are bought through demand-side platforms, often by impression, with rules for time, location or audience. In India it is still small. Estimates range from about 1–2% of DOOH (quoted in Adgully) to around 10% of DOOH and a market of roughly ₹100 crore (quoted in Media4Growth). The bottleneck is supply: not enough screens are yet connected to programmatic platforms.

How DOOH is measured

The basic accountability unit is proof of play: a log from the content management system showing when each advertisement ran on each screen. Ask for it. On top of that, you may see:

• Impressions and reach estimates, based on footfall, traffic or mobility data.
• Audience measurement platforms such as RoadStar, which IOAA backs as a common OOH measurement system (exchange4media).
• Outcome measurement: QR scans, coupon codes, store sales in screen versus non-screen stores, or mobile retargeting of people seen near the screens.

Be wary of impression numbers that come without a method. A good partner explains how a figure was calculated, not just what it is.

When DOOH is the right choice

DOOH tends to work best when:

• the message changes often (prices, offers, schedules, live events);
• the campaign is short or tied to specific days;
• you want to test several creatives and keep the best one;
• you need to reach people close to the point of purchase.

Static OOH is still often better when you need to own a site completely, for a long time, at a lower cost per month, for example a landmark hoarding for brand building. Many strong plans use both: static for presence, digital for timing.

Key takeaways

• DOOH is outdoor advertising on digital screens. It adds scheduling, flexibility and better reporting to OOH’s reach.
• It is the fastest-growing part of Indian OOH, though estimates of its share range from about 12% to 18%.
• Most Indian DOOH is still bought directly. Programmatic buying is early but growing.
• Always ask for proof-of-play logs and an explanation of any audience numbers.

Thinking about DOOH or in-store screens for your next campaign? Get in touch and we will share the options in your cities.