HorizonOS Blu

Horizon Media launched HorizonOS Blu on 18 June 2026 at Cannes Lions as an agentic orchestration layer sitting within its broader HorizonOS platform. The product routes media buys in real time across broadcast, digital, social and out-of-home channels using autonomous AI agents communicating on the Model Context Protocol. Named launch partners include Disney, Fox Corporation, NBCUniversal, TikTok, Snap, iHeartMedia, Clear Channel and OUTFRONT Media.

Horizon Media is one of the largest independent media agencies in the United States, managing more than $8.5bn in annual media spend on behalf of brand clients. HorizonOS Blu replaces a sequence of human placement decisions with machine-executed instructions governed by brand safety rules, budget constraints and campaign objectives, operating without human sign-off on individual buys. The agents communicate with media partners via the Model Context Protocol, the open standard designed to let buyer and seller software exchange instructions without bespoke integrations.

The simultaneous launches of HorizonOS Blu and WPP's Agentic Standards Initiative on the same day pointed roughly $17bn in combined annual agency media spend at a single open protocol in a single session at Cannes. That convergence provides the critical mass of buyer-side volume needed to pull rights-holders into MCP interoperability before proprietary pipelines from individual broadcasters or platforms harden into industry defaults.