Where can I buy DOOH advertising?

Short answer

You can buy DOOH advertising through direct deals with major inventory owners, programmatic marketplaces and supply-side platforms, demand-side platforms, retail media networks, or specialized agencies. Each path offers different trade-offs between premium placement, targeting precision, and campaign speed.

The DOOH market and who owns the inventory

The global OOH market is worth approximately $40 to 45 billion annually. DOOH accounts for roughly 30 to 35% of that total and is growing at around 10 to 12% per year. That growth is driven by a combination of dynamic creative capabilities, better audience data, and the ability to integrate digital screens with other media channels.

The inventory itself comes from several distinct sources. Large operators such as Clear Channel Outdoor, JCDecaux, and Lamar Advertising run extensive networks of digital billboards and screens across urban centers, transit hubs, and retail locations. Retail media networks (RMNs) such as Walmart Connect, Target Roundel, and Kroger Precision Marketing represent a newer and fast-growing category: they combine in-store digital signage with first-party shopper data, enabling campaigns targeted by purchase history and store traffic patterns at the point of purchase.

Four primary ways to buy DOOH

Direct buys. Negotiating directly with an operator gives you access to premium, high-impact placements and room to discuss pricing, positioning, and creative features. The trade-off is longer lead times and less automation.

Programmatic marketplaces and supply-side platforms (SSPs). These automated systems connect advertisers to available inventory through real-time bidding or fixed-price deals. SSPs aggregate screens from multiple operators, widening geographic reach. The main advantages are speed, flexibility, and the ability to optimize campaigns as they run.

Demand-side platforms (DSPs). DSPs let you manage programmatic buying across channels, including DOOH, from a single interface. They typically offer tools such as geofencing, audience segmentation, and real-time contextual triggers based on weather, time of day, or local events. The Trade Desk, for example, uses AI-driven targeting and transparent reporting; a WhatsApp campaign run through its platform achieved an 87% uplift in reach using audience-focused DOOH targeting. Bauer Media Outdoor's AdAstra platform integrates audience behavior, demographics, and route data to optimize site selection and provides real-time performance measurement.

Retail media networks. When proximity to purchase and first-party shopper data are priorities, RMNs offer a distinct advantage. Walmart Connect, Target Roundel, and Kroger Precision Marketing each combine in-store digital signage with retailer-owned data, enabling hyper-targeted campaigns that can improve return on ad spend.

Benefits that make programmatic DOOH attractive

Dynamic creative is one of the strongest arguments for programmatic buying. Ads can update instantly based on contextual triggers: a coffee brand, for instance, can swap between iced and hot drink creative based on the current temperature. Contextual relevance of this kind can increase engagement by 17 to 50%.

Programmatic platforms also combine demographic, location, and real-time behavior data for refined targeting and continuous optimization. Because digital creative requires no printing or physical installation, DOOH eliminates those production costs and allows rapid iteration when messaging needs to change. Omnichannel integration with mobile, online, and retail media creates consistent brand experiences across touchpoints.

Choosing the right mix

Most advertisers benefit from a blended approach rather than relying on a single channel. Direct buys work best for flagship placements where specific location and creative control matter most. Programmatic marketplaces and DSPs provide scale, speed, and targeting precision for broader campaigns. RMNs are the right choice when first-party shopper data and point-of-purchase relevance are central to the strategy.

Specialized agencies can add value at any stage: they bring DOOH planning expertise, established relationships with inventory owners, and experience navigating platform capabilities, creative formats, and measurement frameworks. For advertisers new to the channel or running complex multi-market campaigns, an agency partnership often shortens the learning curve considerably.

How AdQuick handles DOOH buying

AdQuick gives advertisers a single platform to plan, buy, and measure DOOH advertising alongside traditional OOH inventory. Rather than managing separate direct and programmatic relationships, buyers can access a broad range of screens, apply audience and location filters, and track campaign performance in one place. For teams looking to combine the targeting advantages of programmatic DOOH with the transparency of direct buying, AdQuick streamlines the process from initial planning through post-campaign reporting.