DOOH Advertising
Broadsign, StackAdapt, Branded Cities team up in OOH ad alliance
November 17, 2025
Out-of-home adtech provider Broadsign is collaborating with marketing technology provider StackAdapt and OOH media owner Branded Cities to bring automated, in-advance digital OOH ad transactions to North American advertisers.
The alliance will enable StackAdapt buyers to reserve DOOH inventory on the StackAdapt platform for omnichannel campaigns months in advance, starting with Branded Cities' large format, high-impact displays. Global Marketing B2B Agency Ledger Bennett is StackAdapt's first customer to leverage the deal type, having executed an automated, guaranteed campaign for one of its signature clients in July, according to a press release.
StackAdapt buyers can now reserve and book guaranteed Branded Cities inventory via programmatic pipes. Because transactions happen within StackAdapt, buyers can apply the same targeting tools and real-time triggers they use across other digital channels, and view unified DOOH analytics alongside the rest of their campaign reporting.
"Booking our latest campaign in advance through StackAdapt made us realize how much more efficient we could be by cutting out the minutia we typically spend sourcing DOOH inventory directly," Jenija Manandhar, head of media at Ledger Bennett, said in the release. "We were able to easily find the Branded Cities inventory slots we wanted and secure them four weeks out in minutes versus days. At the end of the campaign, it was also easier to compare results across ad channels because all the reporting and analytics were available in one central platform; it's the OOH technology we've been waiting for."
