Magnite today launched Magnite Orchestration, a coordination layer designed to let buyer-side AI agents connect directly to the company's sell-side infrastructure, with dentsu and DIRECTV Advertising among the first partners testing expanded buyer and seller agent capabilities.

The announcement, dated June 11, 2026, from New York, adds a new architectural layer to Magnite's platform. According to Magnite, Orchestration operates as a shared environment where AI-driven buying systems can discover, evaluate, and activate premium omnichannel inventory without requiring custom point-to-point integrations between individual buy-side and sell-side systems.

What Magnite Orchestration does technically

The product sits above the transaction layer. Buyers connect their own agent systems into Orchestration using open integrations that are designed to be interoperable across planning, activation, and optimization tools. The sell side is represented by Magnite's own seller agent, which publishers interact with to package and price inventory.

According to Magnite, the Seller Agent gives publishers two specific capabilities. First, the ability to create custom inventory and audience packages with flexible pricing and targeting controls. Second, making that inventory discoverable and purchasable by buyer agents, enabling what Magnite describes as agent-to-agent transactions - a configuration where automated systems on both sides of a deal negotiate and execute buys without a human manually matching supply and demand at each step.

The Buyer Agent, available for buyers who choose to use Magnite's own tooling rather than connecting a proprietary system, adds two further functions. It generates media plans from a simple RFP and surfaces available supply and audience opportunities. It also handles creative generation and campaign launch across CTV home screens, audio, and other formats through a single workflow.

Buyers who prefer their own agentic infrastructure can connect it into Orchestration instead, using the open integrations Magnite has built. The design choice is notable: rather than requiring adoption of a Magnite-native agent, the company is positioning Orchestration as infrastructure that third-party systems can plug into.

Audience data inside the coordination layer

One of the more technically specific elements in today's announcement concerns how proprietary audience data moves through the system. According to Magnite, buyers, publishers, and data providers can make their own audiences available to agents operating inside Orchestration. Those audiences are then packaged alongside premium supply, making them actionable within the agent workflow rather than requiring a separate integration step.

Dentsu tested this during beta participation. The agency integrated dentsu.Audiences segments into Magnite, which allowed teams to surface proprietary audience data when relevant to a campaign. According to Nick Halas, Head of Product Strategy at dentsu, "interoperability between identity, audience intelligence, inventory, and decisioning systems becomes critical" as the industry moves toward more automated buying. Halas described the dentsu.Audiences integration as "grounded in a unified identity and data layer" and said Magnite's infrastructure enables dentsu to bring "real-time data, optimization, and decisioning capabilities closer to activation."

That framing has operational weight. The historical challenge with audience data in programmatic has been latency - the gap between a data signal existing in a DMP or clean room and that signal actually influencing a live auction. By embedding audience segments inside the Orchestration layer, the architecture is designed to reduce that gap for agentic workflows.

DIRECTV Advertising's position in the test

DIRECTV Advertising is the second named partner testing the expanded capabilities. Drew Groner, Senior Vice President, Head of Sales and Marketing at DIRECTV, described the company's involvement in terms of what premium TV inventory offers inside an increasingly automated buying environment. According to Groner, "as new buying models emerge, we're focused on enabling seamless access to premium inventory and strengthening the connection between buyers and quality media environments."

DIRECTV Advertising's participation follows a series of programmatic infrastructure moves. The company opened its DOOH network to programmatic buying in January 2026 through Place Exchange, Basis, and The Trade Desk. In April 2026, DIRECTV became the first MVPD to connect to LiveRamp's Conversions API Hub, enabling server-side conversion signals across its CTV ad inventory. Both steps positioned DIRECTV's inventory inside newer automated buying infrastructure before today's announcement.

The trajectory from December 2025

Today's launch is not Magnite's first step in agentic advertising. In December 2025, Magnite embedded its first seller agent inside SpringServe and completed an initial agentic advertising test with Scope3 serving as the buyer agent. That test used the Advertising Context Protocol (AdCP), an open standard built on Anthropic's Model Context Protocol, which a coalition including Scope3, Yahoo, PubMatic, Swivel, Triton Digital, and Optable launched on October 15, 2025.

On April 27, 2026, Magnite expanded its AI capabilities across SpringServe and introduced a buyer agent being tested with Disney Advertising, Kepler, MiQ, and Spectrum Reach - the broadest partner set the company had named in a single AI rollout at that point. That announcement also added three AI-supported capabilities to SpringServe's mediation layer: anomaly detection, demand path optimization, and dynamic pricing.

Magnite Orchestration, announced today, represents a third phase - moving from individual agent tests toward a formal coordination layer designed for multiple buyer agents to operate simultaneously within a shared environment.

Sean Buckley, President, Revenue and Market Strategy at Magnite, described the design intent: "The real power isn't AI in isolation; it's AI embedded into the platforms, systems, and workflows that buyers and media owners already rely on to turn opportunity into results. Magnite Orchestration connects intent to execution."

Where this sits in the broader agentic landscape

The programmatic industry has been working through competing frameworks for how AI agents should communicate. AdCP launched on October 15, 2025 with nine core tasks covering the advertising lifecycle, including inventory discovery using natural language campaign briefs and campaign launch. IAB Tech Lab formally named its own umbrella initiative - the Agentic Advertising Management Protocols (AAMP) - on February 26, 2026, providing a three-tier agent hierarchy and an Agent Registry. That architecture went wider than AdCP's nine tasks, covering buyer agents, seller agents, and the mediation layer between them.

Magnite's Orchestration sits at a different level from both: not a protocol standard, but a live coordination environment built on top of Magnite's own sell-side infrastructure. Broadsign and Draft Digital ran what was described as the first fully agentic out-of-home campaign using AdCP in a recent deployment, with the two agents handling planning and procurement while humans provided oversight. Magnite's framework is designed for a comparable pattern, though applied to CTV, audio, and omnichannel digital inventory rather than outdoor formats.

PubMatic launched its AgenticOS in early January 2026. Prebid.org took stewardship of the open-source Prebid Sales Agent on January 29, 2026. Optable's Audience Agent integrated with PubMatic AgenticOS in March 2026. Each of these deployments targeted the same structural premise - reducing manual coordination steps in premium programmatic transactions.

Magnite's financial context

The announcement arrives after Magnite reported Q1 2026 results in May. CTV crossed 51% of contribution ex-TAC for the first time, reaching $82.3 million, up 30% year-over-year. Total Q1 2026 revenue reached $164.4 million, up 6%. That performance followed Q4 2025 revenue of $205.4 million, up 6%, with CTV contribution ex-TAC growing 20%, or 32% excluding political spending.

The company's SpringServe platform serves 99% of US streaming supply according to Jounce Media's March 2025 benchmarking data. SpringServe clients include Disney Advertising, LG Ad Solutions, Paramount, Roku, Samsung, and Warner Bros. Discovery. The scale of that installed base is what gives the Orchestration coordination layer its potential surface area - a buyer agent connecting into Orchestration has access to inventory from across that publisher base, not just from one bilateral publisher relationship.

What changes operationally for buyers and publishers

For publishers, the practical change is that inventory packaged through the Seller Agent becomes accessible to any buyer agent connected to Orchestration - not just the buyer agents of specific pre-negotiated partners. That represents a structural shift from the current PMP model, where each deal requires bilateral setup between a buyer and a specific publisher.

For buyers, connecting a proprietary agent into Orchestration means that agent can now access Magnite's supply-side intelligence and audience data alongside inventory - something that was not previously available through standard programmatic pipes. The workflow for launching a campaign, according to Magnite's description, compresses from multiple system steps - RFP, audience research, creative production, media plan, trafficking - into a single agent-driven sequence.

Whether that compression holds in practice under real campaign conditions, and how the economics of agent-driven transactions compare to direct deal execution, are open questions. The announcement describes beta testing with dentsu and DIRECTV Advertising, not a general availability launch. Magnite's Q1 2026 earnings discussion noted that agentic advertising infrastructure could alter the interface between buy-side systems and the sell-side platform - potentially reducing reliance on manual deal coordination - but also acknowledged the question of whether autonomous agent activity would require new forms of human oversight at scale.

Dentsu's involvement carries additional context. The agency expanded its Magnite partnership in July 2025 to accelerate CTV adoption across EMEA markets, integrating SpringServe across Spain and the United Kingdom. The Orchestration beta builds on that existing technical relationship by adding audience data interoperability to what was previously a supply access arrangement.

Timeline

Summary

Who: Magnite (NASDAQ: MGNI), the largest independent sell-side advertising company, with dentsu and DIRECTV Advertising as named beta partners testing the new capabilities.

What: Magnite launched Magnite Orchestration, a coordination layer that allows buyer AI agents - either Magnite's own Buyer Agent or a buyer's proprietary system - to connect to Magnite's Seller Agent and access premium omnichannel inventory, supply-side intelligence, and audience data in a shared environment designed for agent-to-agent advertising transactions.

When: The announcement was made on June 11, 2026. Beta testing with dentsu and DIRECTV Advertising is already underway. General availability timelines were not specified.

Where: The announcement originated from New York. Magnite operates across North America, EMEA, LATAM, and APAC, with offices in New York, Los Angeles, Denver, London, Singapore, and Sydney. The platform is accessible globally.

Why: Programmatic advertising increasingly relies on automated systems to manage campaign planning, inventory discovery, and execution. Magnite's Orchestration is designed to reduce the manual coordination steps between buy-side and sell-side systems by embedding AI agents directly into the transaction infrastructure - making both the supply and associated audience data available to automated buyers without requiring bilateral custom integrations for each new partner relationship.