Ströer Digital Media GmbH

What Ströer Digital Media GmbH does

Ströer Digital Media GmbH is Germany's leading integrated out-of-home (OOH), digital out-of-home (DOOH), and online advertising company, serving brand advertisers, advertising agencies, digital publishers, private property owners, and German municipalities. The company operates a proprietary technology stack including the Ströer SSP supply-side platform, alternative IDs and Geo-IDs, contextual targeting, AI-assisted campaign optimization, and the OS Data Solutions (OSDS) first-party data pool — all GDPR-compliant and built without reliance on third-party cookies. Ströer's inventory spans over 1,600 media brands including t-online (Germany's #1 news portal), wetter.com, kino.de, GIGA, familie.de, and onvista, alongside traditional and digital out-of-home formats such as Mega-Light, City-Light-Poster, DOOH Giant, DOOH City Board, DOOH Mall, and DOOH Infoscreen.

The company generates revenue across five primary streams: (1) traditional OOH media rental through posters, billboards, and giant formats; (2) programmatic DOOH across digital screens in train stations, shopping centers, and urban locations; (3) online advertising across display, video, mobile, native, social, and high-impact formats; (4) SSP-based publisher monetization bundling demand from advertisers, agencies, and DSPs; and (5) managed services revenue from approximately 20,000 private property owners who rent their walls and locations for media installations. Go-to-market combines direct enterprise field sales for major campaigns, a self-service 'Planen + Buchen' portal for mid-market and smaller campaigns, and government partnerships for smart city infrastructure.

Subsidiaries include blowUP media (giant-format OOH), Content Fleet (content production), Ströer SSP GmbH (programmatic), OS Data Solutions (premium targeting data), and Ströer Regio News (regional news portfolio). Ströer is publicly listed on Frankfurt/Xetra under ticker SZZ, with founder Udo Müller serving as CEO. The company has executed multiple recent product launches (DOOH Video July 2026, The Lighthouse immersive DOOH screen with blowUP media July 2026, High-Impact formats in 2025) and strategic partnerships, including with Deutscher Wetterdienst for extreme weather warnings on 6,000 digital screens across 300+ cities.

Name

Ströer Digital Media GmbH

Legal name

Ströer Core GmbH & Co. KG

Website

https://stroeerdigital.de

Company type

Public

Founded year

1991

Operating status

Operating

Short description

Ströer Digital Media GmbH is Germany's leading integrated out-of-home, digital out-of-home, and online advertising company, serving brand advertisers, agencies, digital publishers, private property owners, and municipalities across a portfolio of 1,600+ media brands.

Ownership category

akta.pro rank

Product category

Outdoor and Digital Advertising Media

NAICS

Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers (51621), Media Buying Agencies (54183)

akta.pro primary industry

Out-of-Home (OOH) Media Buying (Billboards, Transit, DOOH) (BPAFABAE)

Keywords

• Out-of-home advertising
• Digital out-of-home
• Programmatic advertising
• Supply-side platform
• Online display advertising

Headquarters

HQ city

Munich

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Supply Chain, Technology or R&D, Marketing or Sales, Personnel, Infrastructure

Revenue model

1. Out-of-Home Advertising (OOH): Traditional and digital billboard, poster, and giant format advertising placed in public spaces, transportation hubs, and urban environments. Revenue generated through media space rental and booking fees.
2. Digital Out-of-Home (DOOH): Network of digital screens in stations, malls, roadside locations, and public spaces enabling programmatic and audience-based advertising bookings with dynamic content capabilities.
3. Online/Digital Advertising: Display, video, mobile, native and programmatic advertising across Ströer's portfolio of 1,600+ media brands including t-online, watson, kino.de, and regional news portals. Includes high-impact formats and social advertising.
4. SSP Publisher Services: Yield optimization and monetization services for publishers through Ströer's supply-side platform, bundling demand from direct customers, agencies and DSPs.
5. Property/Location Rental: Revenue from approximately 20,000 private property owners who rent their walls and locations for media installations, generating three to four-figure annual returns.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels7 records

Core offering

Ströer Digital Media GmbH sells advertising space and services across out-of-home (OOH), digital out-of-home (DOOH), and online/digital channels, supported by a proprietary ad stack and SSP platform. Its portfolio spans over 1,600 media brands plus more than 20,000 private property partners, reaching 90%+ of the German population weekly. The company also operates a supply-side platform for publishers and provides smart-city digital information infrastructure to municipalities.

Product overview

Ströer Media Solutions operates as a comprehensive advertising platform combining out-of-home (OOH), digital out-of-home (DOOH), and online advertising solutions. The product portfolio includes: Online advertising with Video, High Impact, Social, Commerce, Programmatic, Content & Native, and Audience targeting products; DOOH products including DOOH Giant, DOOH City Board, DOOH Infoscreen, DOOH Station, DOOH Mall, and DOOH City Tower; traditional OOH formats such as City-Light-Poster, Mega-Light, Großfläche, Ganzsäule, Riesenposter, Kulturmedien, Eventmedien, Handelsmedien, Hinweismedien, Verkehrsmedien, and Bahnhofsmedien; and the Ströer SSP supply-side platform for programmatic advertising. The portfolio spans over 1,600 media brands including t-online (Germany's #1 news portal), wetter.com, kino.de, GIGA, familie.de, onvista, and freenet. Smart city solutions include the Kommunales Informationssystem (KIS) for municipal information and warning systems. New innovations include DOOH Video (2026) and The Lighthouse immersive DOOH screen.

Differentiator

Problem solved

Functional benefit

Brands

• Ströer Digital Brands: Portfolio of renowned media brands including t-online, watson, desired, familie.de, GIGA, kino.de, and other premium environments
• OS Data Solutions (OSDS)
• DOOH Video
• The Lighthouse

Products and services

• Ströer Media Solutions (Online Advertising) Integrated digital advertising platform offering display, mobile, native, and programmatic advertising across 1,600+ media brands including t-online, watson, kino.de, GIGA, and familie.de; for brand advertisers and media agencies.
• Out-of-Home Advertising (OOH) Out-of-home advertising covering billboards, posters, city-light posters, mega-lights, full columns, transport media, and cultural/event media; for brand advertisers and agencies seeking broad reach.
• Digital Out-of-Home (DOOH) Advertising Digital screens including City Board, City Tower, Giant, Infoscreen, Station, Mall, and ambient formats supporting programmatic and audience-based bookings with dynamic content for brand advertisers.
• Ströer SSP (Supply-Side Platform) Supply-side platform enabling digital publishers to monetize advertising inventory through private deals, private auctions, and real-time bidding by bundling demand from direct customers, agencies, and DSPs.
• DOOH Video Newly launched digital video advertising product category in the out-of-home environment, providing video-led DOOH advertising formats for brand advertisers.
• The Lighthouse (Immersive DOOH Screen) Germany's first immersive DOOH screen located in Hamburg St. Pauli, jointly developed with blowUP media to deliver spectacular large-format digital advertising experiences.
• High-Impact Formats (Breakout Ad, Top Scroller, Spotlight Video Ad) Attention-grabbing online advertising formats including Breakout Ad, Top Scroller, and Spotlight Video Ad designed to increase interaction rates and creative product staging for brand advertisers.
• Kommunales Informationssystem (KIS) - Smart City Information System Digital municipal information system enabling cities to communicate with citizens, run calls for participation, publish event notices, support local trade, and broadcast real-time warnings including weather alerts.
• OS Data Solutions (OSDS) Premium targeting solution providing GDPR-compliant first-party German consumer data for precise audience targeting across OOH, DOOH, online, and CTV advertising without third-party cookies.

Quantifiable outcome

• 90%+ weekly reach of German population
• +4 more outcomes

Named customers15 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

AI capability10 records

Feature6 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• blowUP mediacoreStrategic or Co-development Partner · 6 July 2026Joint launch of 'The Lighthouse' - Germany's first immersive DOOH screen in Hamburg St. Pauli. blowUP media contributes premium giant format expertise while Ströer provides digital out-of-home infrastructure and network capabilities. Similar to London's Piccadilly Lights.
• Behörde für Verkehr und Mobilitätswende der Freien und Hansestadt Hamburg (FHH)coreStrategic or Co-development Partner · 1 January 2024Smart city partnership for UEFA Euro 2024 providing real-time P+R parking space availability information on digital screens, routing drivers to available parking using data from Hamburg's geoportal.
• Bundesamt für Bevölkerungsschutz und Katastrophenhilfe (BBK)coreStrategic or Co-development Partner · 1 January 2018Official warning multiplier for the German Federal Office for Civil Protection and Disaster Assistance, enabled to broadcast official warnings and all-clears through MoWas (Modulares Warnsystem) since 2018.
• OS Data Solutions (OSDS)coreTechnology or IntegrationStrategic data partnership providing premium first-party German consumer data for targeting capabilities, enabling GDPR-compliant audience targeting without third-party cookies. Part of Ströer's 'Made in Germany' value proposition for data quality and privacy compliance.
• The&Partnership GermanyminorChannel Partner/ Reseller/ DistributorLead agency partnership for the Toyota C-HR 360-degree campaign featuring new High-Impact formats (Breakout Ad, Top Scroller, Spotlight Video Ad). Agency contributed creative strategy while Ströer provided media execution.
• Deutscher Wetterdienst (DWD)coreStrategic or Co-development PartnerPartnership for displaying official extreme weather warnings from the German Weather Service on 6,000 digital city information screens across 300+ German cities. Supports early population warning for storms, extreme heat, and other weather events.
• Saint Elmo's TourismusmarketingminorChannel Partner/ Reseller/ DistributorCreative agency partnership for Dolomiti Superski dynamic DOOH campaign. Agency conceived the winter campaign featuring live ski resort imagery on Public Video screens in Munich and Stuttgart.
• Weischer.NFQminorChannel Partner/ Reseller/ DistributorMedia planning and implementation partner for Dolomiti Superski campaign. Contributed to planning and execution of dynamic creative content featuring live resort images and temperature data.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Emerging players

• Vistar Media: Programmatic DOOH specialist offering a demand-side platform for planning and buying digital out-of-home advertising. Comparable to Ströer DOOH programmatic capabilities in the same emerging channel.
• Hivestack: Programmatic DOOH ad exchange enabling buyers and sellers to transact digital out-of-home inventory globally. Comparable to Ströer's programmatic DOOH ambitions through SSP integration.
• Adform: European ad tech platform providing DSP, SSP, and DMP capabilities for programmatic display, video, and CTV. Comparable to Ströer's integrated programmatic + first-party data capabilities in the European market.

Direct peers

• Outfront Media: North American outdoor advertising operator with transit, billboard, and digital displays. Directly comparable business model in OOH/DOOH media buying with similar public-company structure and enterprise sales approach.
• JCDecaux: World's largest outdoor advertising company operating street furniture, billboards, and DOOH networks globally. Directly comparable to Ströer in OOH/DOOH media buying, with overlapping product categories (e.g., City-Light-Poster equivalents) and a similar public-infrastructure partnership model.
• Equativ: Independent SSP platform offering programmatic monetization for publishers across display, video, and CTV. Directly comparable to Ströer SSP in supply-side platform capability and publisher yield optimization.
• Clear Channel Outdoor: Major global OOH/DOOH media operator with billboards, transit, and airport advertising portfolios. Direct competitor in the OOH/DOOH media buying space, comparable in product breadth and enterprise advertiser focus.
• Lamar Advertising: US-focused outdoor advertising company with billboard and digital billboard inventory. Comparable in OOH/DOOH media buying mechanics and public-company status, though geographically distinct.

Broad incumbents

• Publicis Groupe: Global advertising holding company with significant media buying and planning operations. Comparable as a media buyer/agency counterpart and overlap in OOH/DOOH buying services for enterprise clients.
• Criteo: Publicly traded digital advertising/retargeting platform with European roots. Comparable in providing digital advertising technology and audience targeting, though focused on performance/commerce rather than broad OOH/DOOH.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights8 records

Customer concentration

• YouTubeyoutube.com/user/StroeerGroup
• LinkedInlinkedin.com/company/stroeer

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ströer Digital Media GmbH