Observed Signal · Jan 14, 2026 · Technical Release · Source: https://iabtechlab.com/feed/ · Impact: 4/5 · Sentiment: Positive
Unlock 2026: Key OpenRTB Updates for Programmatic Success
IAB Tech Lab’s Programmatic Supply Chain Working Group published a set of 2025 OpenRTB-related updates designed to reduce friction in programmatic Connected TV (CTV). Key releases include Content Taxonomy 3.1 (a richer genre taxonomy with CTV-focused categories and gTax support), Extended Content Identifiers (ECIDs) to enable privacy-safe content signals without sharing show titles, and new API concepts—sidecar APIs—targeted at live-event scale. The LEAP Concurrent Streams API (real-time concurrent viewer counts) is the first deliverable; a Forecasting API is planned for early 2026. A standardized Deals API (in public comment through Jan 31, 2026) and a new Object: Curation aim to fix fragmented deal workflows and improve transparency. The working group recommends implementing these standards together (taxonomy, ECIDs, Concurrent Streams, Forecasting and Deals APIs) to improve CTV targeting, monetization and operational scalability.
IAB Tech Lab standards (taxonomy, ECIDs, and new APIs) materially affect programmatic CTV targeting, deal interoperability and live-event scale—adoption can change monetization and operational practices across buyers, sellers and ad tech vendors.
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Key Takeaways & Evidence Grounding
- IAB Tech Lab’s Programmatic Supply Chain Working Group released multiple 2025 updates focused on programmatic CTV.
- Content Taxonomy 3.1 expands categories (nearly three times Content Taxonomy 1.0) and includes a curated subset for CTV genres.
- IAB Tech Lab recommends adding gtax and genre to Object:Content in OpenRTB 2.6x bid requests for better targeting.
- Extended Content Identifiers (ECIDs) in OpenRTB 2.6x let publishers pass unique content IDs instead of plain-text show titles.
- Sidecar APIs were introduced for async activity around live events; Concurrent Streams API (LEAP) provides real-time device viewer counts; Forecasting API is expected early 2026; Deals API was in public comment until Jan 31, 2026.
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Related Market Signals & Shifts
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IAB Tech Lab Updates OpenRTB for Live Content
IAB Tech Lab has proposed updates to the OpenRTB standard to give programmatic buyers and sellers clearer, structured signals about "liveness" in bid requests and to improve pricing transparency. The changes add two optional fields and clarify an existing field in OpenRTB and AdCOM so sellers can indicate whether content is truly live, real-time but not strictly live, or in its first broadcast window. The proposal also refines substitution macros to better communicate discounts and net pricing between sellers and demand-side platforms. The work comes from IAB Tech Lab’s Programmatic Supply Chain working group and is open for public comment through May 28, 2026. The aim is to reduce ambiguity and friction as CTV and live-event inventory grow in programmatic channels.
CTV Matures: Industry Unites for Standards and Innovation
IAB Tech Lab recapped the I Want My CTV 2025 event, emphasizing that Connected TV (CTV) has matured from experiment to a cooperative industry marketplace. Brad Pipkin, newly appointed Director of Product Management for Advanced TV at IAB Tech Lab, highlighted standards and collaboration as central themes. Panels and keynotes promoted standardization efforts — including OpenRTB, Deals API, OM SDK (v1.6 device attestation), Forecasting and Concurrent Streams APIs, and a public comment period for the CTV Ad Portfolio (opened December 11). Sessions covered new ad formats, measurement and verification challenges, edge delivery for live events, and the commercial potential of novel devices and formats (for example, Telly). Speakers urged cross-industry participation in working groups to drive interoperability, measurement integrity, and scalable programmatic monetization for future live and on-demand CTV inventory.
CTV Ad Ops Matures into Repeatable Operations
IAB Tech Lab reported at its 2026 Ad Ops Workshop for Advanced TV that Connected TV (CTV) has reached scale (projected at $29.3B in U.S. spend for 2026) and needs more mature, repeatable operating infrastructure. The workshop highlighted finalized CTV Ad Portfolio guidance (six ad formats), two delivery paths using OpenRTB/VAST and the Native API, tools and APIs for earlier creative approval and validation (Ad Management API, Next‑Gen VAST Tester), and standards for event reporting and creative identity (ECAPI, ACIF, UniversalAdID). Attendee polls showed meaningful early adoption intentions but also identified organizational and data-access barriers to measurement and identity. The Tech Lab emphasized that publishing standards is only the start — real value requires broad implementation, governance, and partner participation.
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