MIAMI — Supply-side platform partnerships have dramatically consolidated as buyers recognize the inefficiency of managing dozens of technology relationships, shifting toward deeper integrations with two to five strategic partners rather than broad vendor distributions.
“If you go back six or seven years, it was not uncommon for buyers to work with 50, 60 downstream supply side technology companies,” Sean Buckley, president, revenue at Magnite, told Beet.TV contributor David Kaplan at POSSIBLE. “Buyers have certainly realized that’s not an ideal setup. There’s material downside to operating that way.”
This consolidation drives supply-side data activation and decisioning as buyers pursue better signal fidelity, improved cost effectiveness, and workflow flexibility through fewer, deeper partnerships.
Retail media chooses supply-side integration
Commerce and retail media partners increasingly integrate data on the supply side rather than demand side, gaining workflow flexibility through single integrations that enable tight activation control while accommodating diverse buyer preferences.
“If a retail media partner integrates their data with us, there’s one integration. They’re able to have very tight control around how that data is activated through sell side refinement and they’re able to work with their various buyers through whatever workflow the buyer has,” Buckley said.
Recent partnerships include Expedia, Best Buy, and Roku’s curated offering that activates powerful retail media datasets for buyer access.
SpringServe adds mediation capabilities
Magnite’s SpringServe platform operates as both ad server and mediation hub, with mediation representing newer CTV functionality that integrates programmatic partners, creative quality tools, and inventory sharing between distributors and programmers.
New capabilities include autonomous anomaly detection that surfaces business changes outside normal parameters, dynamic pricing automation that adjusts to market conditions, and demand path analysis that clarifies dollar flow from brands to publishers.
Agentic transactions emerge through new rails
Magnite deployed seller agents enabling publishers to surface inventory options and buyer agents that process briefs andRFPs, creating automated deal agreement and transaction execution through emerging agentic frameworks.
“A few weeks ago, we announced our seller agent. [During the last week in April] we announced our buyer agent, which enables buyers to come forward with a brief, an RFP, what they’re looking for,” Buckley said. “Those two come together, agree on deal terms, and then we push that directly to our transaction layer.”
The interoperable approach allows partners to integrate existing agentic tools while maintaining flexibility for diverse customer requirements.
Strategic positioning drives scalability
Magnite’s ad stack position enables scalable agentic offering development through partnerships with consequential industry players including Disney, Charter Spectrum, Publicis, and MIQ.
“It’s critical where you sit in the ad stack and who you’re working with. We sit at a critical point in the ad stack, which makes it much more scalable to bring these types of offerings to market,” Buckley said. “We’re very excited, [and there’s a] long way to go, about the developments here.”
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