This Ad Tech Briefing covers the latest in ad tech and platforms for Digiday+ members and is distributed over email every Tuesday at 10 a.m. ET. More from the series →The programmatic supply chain has spent the past decade optimizing around distance — separating data, decisioning, and execution across multiple hops in the name of scale. Now, a growing cohort of ad tech firms is trying to reverse that architecture altogether.On June 1, PubMatic became the latest to formalize that shift, launching its containerization layer, Decision Fabric, built on AgenticOS. The product allows partners — including inPowered, MiQ, Chalice, and SWYM — to run their own decisioning models directly within the supply path, as soon as an impression becomes available.

By moving bidding logic, audience qualification, and optimization closer to the auction itself — rather than executing those decisions in demand-side platforms or public cloud environments — operational costs can be significantly reduced. These benefits include better signal fidelity, lower latency, plus other reductions in infrastructure costs, alongside more direct access to inventory.

PubMatic’s move follows a similar announcement from Index Exchange earlier this spring, in which its “Index Cloud” initiative enabled partners — including DSPs, such as Bedrock — to deploy applications directly within its exchange infrastructure.