Executive Summary

The German DOOH landscape is at a technological inflection point. Programmatic buying is moving from an add-on capability toward a standard buying mode, driven by major inventory owners such as Ströer or WallDecaux and by global/local ad-tech platforms including VIOOH, Broadsign, Displayce, Adform, Hivestack/Perion, Active Agent and One Tech Group. Retail media is becoming an important adjacent growth layer, especially through in-store screen networks. CTV partnerships show broader video-sales convergence, but should be treated as omnichannel expansion rather than core DOOH.

Key Market Segments

Demand and Supply Side Platforms (DSP/SSP)

The market combines global DSPs such as Displayce, The Trade Desk, Adform, DV360, Active Agent and StackAdapt with DOOH-specialized SSPs and platforms such as VIOOH, Broadsign, Hivestack/Perion, Vistar Media and One Tech Group’s SSP1. The strongest trend is not just more automation, but tighter integration between SSP, adserver, inventory packaging and measurement. Broadsign’s acquisition of Place Exchange and VIOOH’s AI-supported curated deal automation point toward a more consolidated and automated programmatic DOOH infrastructure.

Media Owners and Inventory Networks

Ströer remains the dominant German DOOH player, with strong roadside, public video and programmatic inventory. WallDecaux, HYGH, FRAMEN, Cittadino, Media Frankfurt or new offers such as T Advertising Solutions add important urban, transport, office, retail and place-based inventory. Ströer’s Zattoo partnership expands its digital video sales portfolio into CTV, but this should be framed as cross-channel video monetization rather than as direct DOOH inventory.

Retail Media and Specialized Providers

Retail media is emerging as a critical sub-segment, evidenced by One Tech Group’s partnerships with major retailers like Rossmann and XXXLutz to open in-store digital inventory to external advertisers. Specialized providers like Weischer and It Works GmbH continue to bridge the gap between creative execution and technical distribution, with Weischer recently launching a dedicated agency for branded entertainment. However Retail media should be shown as DOOH-adjacent, not as part of the classic DOOH core. The relevant overlap is in-store digital screens. One Tech Group is a key German infrastructure player here.

Cross-Platform and Omnichannel Expansion

The boundary between DOOH and other digital formats is blurring. Vistar Media is leveraging a collaboration with TikTok to bring "Out of Phone" creativity to DOOH screens at scale, while Ströer's deal with Zattoo brings streaming video inventory into the traditional OOH sales house. Measurement is also becoming more unified; AppsFlyer's move into the open web and IDOOH's focus on mobility panels are steps toward cross-channel attribution.

Measurement and Research Initiatives

Industry associations like IDOOH and IAB Switzerland are prioritizing standardized metrics. Recent developments include the use of large-scale mobility panels and AI-based measurement tools (such as SPR+ 6.0) to provide granular audience data for both digital and analog formats.

Strategic Outlook

The future of the German DOOH market will be defined by three pillars: Measurement, AI-driven Efficiency, and Retail Integration. As third-party cookies continue to decline, the industry is gravitating toward authenticated user IDs (like netID) and privacy-compliant mobility data. The rise of "agentic" AI workflows suggests that the next phase of competition will be won by platforms that can best automate the complexity of multi-channel planning and execution.