Only 57% of buyers trust programmatic video transparency as AI complicates auctions
A recent IAB report reveals that trust in programmatic video transparency is below 60%, largely due to visibility gaps caused by AI-driven decisioning. Industry bodies, including the MRC and IAB Tech Lab, are advocating for standardized reporting and accountability frameworks to help buyers and publishers understand automated auction outcomes.
Key Takeaways
- Trust in programmatic video transparency sits at 57% for direct I/O and self-serve platforms, dropping to roughly 33% for open exchanges.
- IAB Tech Lab is advancing the SupplyChain v1.1 update to provide full visibility into both technical custody and payment flow for bid requests.
- The 2026 MRC Digital Advertising Auction Transparency Standards now require platforms to disclose non-price factors like relevance scores and AI model feature importance.
- Approximately 15% of programmatic ad spend remains untraceable, according to longitudinal supply chain studies cited by the IAB.
Why It Matters
The immediate implication is a flight to quality, as buyers shift budgets toward platforms that can explain AI-driven outcomes rather than just reporting them. Within the streaming ecosystem, this creates a competitive divide between retail media networks—which leverage deterministic first-party data—and fragmented open exchanges struggling with signal loss. As AI automates bid optimization and inventory selection, the technical logic of auctions has become a 'black box,' making standardized frameworks like the Open Measurement SDK essential for proving impression validity. Watch for the industry's response to the IAB Tech Lab's Agentic Roadmap, which will determine if new technical signals can restore confidence in automated CTV transactions by late 2026.
Additional Context
The push for greater programmatic video transparency follows significant efficiency gains documented in the Association of National Advertisers' 2024 Programmatic Transparency Benchmark Study. Per the ANA in December 2024, the share of every ad dollar effectively reaching consumers rose to 43.9%, a 7.9 percentage point increase from the previous year. This improvement was largely attributed to a sharp reduction in spending on low-quality 'Made-for-Advertising' (MFA) sites and a 48% decline in the total number of active publisher domains, signaling a market-wide shift toward more curated, brand-safe environments.
Simultaneously, measurement infrastructure is evolving to handle the unique technical challenges of streaming. Per IAB Tech Lab in January 2026, the Open Measurement SDK has been upgraded with 'Device Attestation' for Samsung, LG, AndroidTV, and tvOS. This capability allows publishers to prove impressions are rendered on authentic devices rather than being spoofed by non-human traffic. These technical milestones coincide with the Media Rating Council's January 2026 finalization of its Digital Advertising Auction Transparency Standards, which for the first time formalizes disclosure requirements for CTV auction mechanics, including floor price fairness and bid prioritization rules.
Read full article at martech.org
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