Observed Signal · Jun 22, 2026 · Thought Leadership / Opinion · Source: The Drum · Impact: 2/5 · Sentiment: Positive
CMOs Should Demand Control in the AI Era
An opinion piece published during Cannes Lions 2026 argues that chief marketing officers must insist on transparency, data ownership, and flexible operating models from agency partners as AI transforms marketing. The authors — Bob Lord (CEO) and Renata Spackova (COO) of Horizon Global — say many agency platforms have become opaque, lock clients into technology and profit models that misalign with brand needs, and resemble 'agency walled gardens.' They cite a 3C Ventures whitepaper, What Are You Buying?, which finds platform-language uniformity and weak governance drive marketer confusion. Horizon Global, a joint venture between Horizon Media and Havas Media Network launched in late 2025, promotes its BluConverged platform, single-P&L structure, and explicit client data ownership as solutions to these challenges. The article urges marketers to treat agency partners as growth builders who enable client control rather than gatekeepers.
Highlights agency model, data ownership and platform transparency issues that affect global marketers amid rapid AI adoption, but is an opinion piece rather than a technical release or major platform policy change.
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Key Takeaways & Evidence Grounding
- Horizon Global is a joint venture between Horizon Media and Havas Media Network, launched in late 2025.
- Bob Lord (CEO) and Renata Spackova (COO) of Horizon Global authored the piece.
- The article references a 3C Ventures whitepaper titled 'What Are You Buying?' highlighting platform-language uniformity and lack of governance.
- Horizon Global promotes a proprietary platform called BluConverged and says clients retain ownership of their data.
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Related Market Signals & Shifts
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CMOs Must Be More Tech-Enabled, and So Must Agencies
AdExchanger published an interview (May 14, 2026) with Valeria Balaro, Chief Marketing Officer at Star, about rising technical expectations for chief marketing officers and their agency partners. Balaro says CMOs must understand and architect martech and AI systems because revenue accountability now requires traceable measurement across the buying funnel. Agencies have invested millions in AI-powered platforms — examples cited include Omnicom’s Omni, Horizon Media’s HorizonOS and Havas’ AVA — and brands are beginning to select partners based on those capabilities. Star teamed with Forrester Research on a survey of marketing leaders referenced in the interview. Balaro also predicts consolidation as many LLM-wrapping startups converge or exit, and she expects low-value tasks to be automated while high-end creative work becomes more differentiated and valuable.
Cannes Panel: Brands Need Conviction in the AI Era
At Cannes Lions, a HORIZONT-hosted panel titled "The Future of Brand Growth in a Fragmented, AI-Driven Media Landscape" brought together four CMOs and a media manager to debate how brands should drive growth amid rising AI-driven media fragmentation. The discussion highlighted tensions between highly data-driven, scalable marketing and uncertainty about what truly moves audiences, arguing that brands must articulate clear positions and purpose to remain effective in an AI-influenced ecosystem. The piece was reported by Catrin Bialek for HORIZONT and published on 2026-06-26.
Bob Lord Urges Agency Transparency and AI Reinvention
Bob Lord, president of Horizon Media Holdings, delivered a keynote at the Advertising Research Foundation’s Audience X Science conference arguing that traditional agency business models are antiquated and lack transparency. Lord said agencies must redesign around performance alignment, clear disclosure of platform and data fees, and explainability in AI models; Horizon discloses technology fees and charges a Blu fee for its AI platform. Forrester’s Jay Pattisall warned that emerging agentic media buying could increase opacity even as it reduces intermediary hops and fees. A separate report from Keen Decision Systems found 44% of advertisers plan to in-house more media planning, and that brands are testing advertising within generative-AI interfaces. The briefing also notes industry product and funding news: Dentsu launched a Global Media Planner (powered by Lumen), and new AI-native agency Multiply raised $9.5 million.
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