DOOH builds upon classic outdoor advertising but integrates digital distribution, data-driven management, and new ways of purchasing media. In programmatic DOOH (prDOOH), concepts such as RTB, open auctions, and private deals are essential, as is DCO (Dynamic Creative Optimization) when it comes to the content itself. To fully leverage DOOH, one must understand how these components interact.

RTB: The engine of programmatic buying

RTB (Real-Time Bidding) is the process where advertising space is sold via automated auctions rather than fixed price lists.

In traditional digital advertising, this means every single impression served to a unique user can be auctioned off. In DOOH, it functions slightly differently:

• You bid on time slots and screens (e.g., a specific screen between 7:00 AM and 9:00 AM).

• The price can be adjusted dynamically based on demand, time of day, and environment (commuter paths, city centers, retail areas, etc.).

It is RTB, but in a physical environment where “impressions” are tied to location and time, rather than individual cookies or IDs.

Open Auction: The open trading floor

An open auction is the most transparent form of RTB:

• Multiple buyers can place bids on the same DOOH inventory simultaneously (e.g., bus shelters, street furniture, or city information panels).

Advantages:

• High flexibility: You can scale up or down rapidly.

• Opportunity to “capture” premium inventory when it becomes available.

Disadvantages:

• Less control over the exact inventory received when competition is high.

• More difficult to guarantee specific premium placements during peak time slots.

Open auctions are ideal when the objective is reach and flexibility, rather than total control over every individual screen.

Private Deals: More control, still programmatic

Private deals are a middle ground between open auctions and traditional direct bookings:

• Media owners and advertisers (or agencies) agree on terms in advance—floor prices, conditions, and often which networks or screen types are included.

• The purchase remains programmatic but occurs within the framework of this “private” agreement.

Benefits:

• Better transparency regarding pricing and guaranteed access to specific screens.

• Ability to secure attractive inventory while maintaining optimization logic based on target audiences, traffic flows, location, and time.

Private deals are suitable when you want to combine quality and control with programmatic efficiencies.

DCO: Creative content linked to data

DCO (Dynamic Creative Optimization) is about automatically adapting the message based on data—not just in banners, but in DOOH as well:

• The system selects the version of the message to be displayed on a specific screen based on factors such as time of day, day of the week, location, weather, traffic, or other real-time data.

Example: A brand displays a more “inspirational” message in the city center during the day, but a “purchase-oriented” message near retail areas during afternoons and weekends. Without DCO, someone must manually switch the creative. With DCO, the campaign continuously directs the right message to the right place at the right time.

The Big Picture: prDOOH as a dynamic part of the mix

The combination of prDOOH (programmatic logic), RTB, open auctions, private deals, and DCO allows DOOH to be planned more like digital channels, but with the core strengths of OOH (reach, physical presence, VAC).

In practice, this means:

• Static, “locked” bookings are partially replaced by continuous optimization.

• The system can drive performance toward the screens and time slots that best contribute to campaign goals within defined parameters.

• Messaging can be adapted for different contexts without the need for manual production and site-by-site material replacement.

For specific initiatives like takeover campaigns, iconic sites, or custom (D)OOH activations, traditional bookings will always remain the right path. However, for many brands, programmatic logic is a way to get more impact per invested currency in digital out-of-home advertising.

Large networks and media owners describe the same development:

• JCDecaux: Programmatic at JCDecaux. An overview of how programmatic buying, RTB, and deal types are used to build reach and precision.

• Dentsu: Private Marketplace as an alternative to open RTB. Dentsu details how Private Marketplaces (PMPs) and programmatic deals provide more control than purely open auctions—a concept directly applicable to DOOH logic: dentsu-ho.com.

These sources confirm that major networks are moving in the same direction: programmatic, RTB, and deal-based setups are no longer a niche—they are the standard. DOOH is aligning with the modern approach to data, control, and effectiveness.