Observed Signal · May 18, 2026 · Policy Update · Source: https://www.iab.com/blog/feed/ · Impact: 3/5 · Sentiment: Positive
IAB Calls for Programmatic Supply-Chain Transparency
An IAB blog post by Angelina Eng (May 18, 2026) argues the programmatic advertising supply chain lacks clear visibility into fees and revenue flows, leaving a large portion of advertiser spend not reaching publishers. The piece cites industry research (ANA, ISBA, Jounce Media) on low working-media efficiency and describes contractual and technical barriers to disclosure. It highlights ongoing industry efforts — IAB Tech Lab’s Programmatic Governance Council and IAB’s Project Eidos — to build standards, taxonomies and standardized terms and conditions. The author proposes five practical steps for near-term progress, including standardized fee reporting, impression-level cost reconciliation, explicit opt-in for paid services, publisher-side revenue breakdowns, and a common fee taxonomy.
IAB is an influential industry body; its push for standardized fee reporting, taxonomies (Project Eidos) and programmatic governance can materially improve transparency, measurement consistency, and how spend is allocated across the programmatic supply chain.
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Key Takeaways & Evidence Grounding
- Published May 18, 2026 by Angelina Eng (Vice President, Measurement, Attribution & Data Center) on IAB’s blog.
- IAB Tech Lab’s Programmatic Governance Council is developing guidelines and standards to improve programmatic efficiency and transparency.
- IAB’s Project Eidos is defining data sets and taxonomies for consistent measurement and reporting across the ecosystem.
- Industry studies (ANA, ISBA, Jounce Media) show working-media efficiency estimates around $0.50–$0.57 on the dollar in premium/top-performing cases, with broader averages lower.
- The article recommends five actionable steps: standardized fee reporting (unbundled line items), impression-level cost reconciliation, explicit opt-ins for paid tools, publisher-side revenue breakdowns, and a common fee taxonomy.
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Is Programmatic Transparency Today Sufficient?
The article argues that transparency in the programmatic supply chain has improved through technical standards (e.g., ads.txt, sellers.json, Supply-Chain-Object) but remains insufficient for reliable campaign steering and optimisation. True utility requires consistent, comparable data across all supply-chain participants — covering traceability, cost/margin breakdowns, and the data and decisioning logic used by platforms. Fragmented data and uneven disclosure hinder meaningful comparisons and budget decisions. The author proposes curation — deliberately selecting and bundling supply paths — as a practical lever to turn visibility into controllability. The piece calls on publishers, platforms and intermediaries to disclose cost structures, performance metrics and value contributions so agencies and advertisers can evaluate inventory, choose supply paths and deploy budgets more effectively.
Agency Fees in Creator Deals Pose Transparency Challenge
A new Future of Marketing Briefing from Digiday highlights growing concerns over hidden agency fees in creator marketing. A survey by the Incorporated Society of British Advertisers (ISBA) found that only 42% of marketers report fully transparent agency fees for creator work. Consultants like TrinityP3 warn that bundled deals can leave as little as 35% of budget for talent, compared to 60% when billed line-by-line. The Association of National Advertisers (ANA) reports agencies take an average 30% of influencer spend, with only 39% of agreements transparent. Experts argue that as creator budgets grow, the lack of itemized fees obscures value, leading to calls for greater accountability and measurement. The briefing also covers Diageo's creator recruiting strategy via Martha's Vineyard activations and other industry news.
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