Omnicom launches cross-platform frequency measurement via Acxiom-Snowflake clean room

This development moves the industry beyond aggregated frequency averages, which often mask significant individual overexposure. By merging Acxiom's identity graph with VideoAmp’s viewership data inside a controlled clean room, Omnicom is effectively dismantling the 'black box' measurement of major streaming walled gardens. This allows for more precise dynamic creative optimization and real-time budget reallocation between linear and CTV. Strategists should monitor whether rival holding companies achieve similar data-sharing concessions from publishers to maintain competitive benchmarking capabilities.

Omnicom Media's cross-platform clean room builds on a research foundation the company published earlier this year. Omnicom's "Why Frequency Matters: Combating Negative Reach" study found that more than 60% of consumers report seeing the same ad multiple times in a single streaming session, with frustration rising sharply after repeated exposures in one sitting. The study defined "negative reach" as the point at which repeated impressions actively damage brand perception rather than enhance it, and found that more than half of consumers would pay a premium to avoid seeing the same ads repeatedly within a single streaming session. That research directly motivated the clean room's development, with Omnicom citing it as the impetus for collaborating with streamers including Amazon, AMC, Disney, Fox, NBCU, Roku, Paramount, and Samsung on frequency management.

The clean room also extends Omnicom's Video Content Cross-Screen Planner, which the company enhanced in collaboration with VideoAmp to incorporate set-top-box and ACR data alongside The Trade Desk's programmatic bid stream data. That planning tool enables investment teams to suppress wasteful repetition within sessions and reallocate impressions to drive incremental reach across screens. The new clean room measurement layer adds post-campaign attribution on top of that planning capability, closing the loop between frequency management during flight and performance measurement after it.

Omnicom's approach to cross-platform frequency measurement relies on a Creative ID embedded by publishers in ad creative to track how often a specific spot is served. According to Megan Pagliuca, Omnicom Media's chief product officer, this integration represents the first time major CTV publishers have allowed the Creative ID to be passed back into a multiplatform clean room environment. The capability is now live across Disney, NBCUniversal, Paramount, and additional VOD platforms and FAST channels, with Omnicom planning to announce more integrations with other streamers in the coming months.