Publicis takes LiveRamp, the identity layer
Publicis Groupe announced in May the acquisition of LiveRamp, the largest independent data collaboration platform. Omnicom and Horizon Media are already drafting an exit plan.
Mariano De Vitto · May 2026
Publicis Groupe announced in May the acquisition of LiveRamp, the largest independent data collaboration platform on the market. Omnicom and Horizon Media are already drafting an exit plan. The holdco war just changed axis.
LiveRamp connects thousands of publishers, data providers and platforms. It is where identity matching between brand first-party data and addressable audiences across platforms gets done. Until now it was neutral infrastructure: Publicis, Omnicom, WPP and Dentsu used it equally. Having it owned by one holdco changes the chain. Publicis adds to its stack (Epsilon, Sapient, CitrusAd) the piece that was missing: the neutral identity layer. The result is an end-to-end vertical system, from the client's first party to cross-platform activation.
Who loses something, who gains something
Omnicom and Horizon lost their preferred match provider. They have three options: license the LiveRamp API on new terms (price and roadmap risk), build a competitor (expensive and slow) or pivot to alternatives like The Trade Desk, Snowflake and AWS Clean Rooms. Independent DSPs win: with Publicis owning the identity layer, neutral DSPs become a refuge for advertisers who don't want to depend on a single holdco for cross-platform activation.
What the client does
For a brand client, the question is whether the current agency contract includes LiveRamp usage. If it does, renegotiate before the transfer, because commercial and data-exposure terms will shift. If it doesn't, map what percentage of the brand's cross-platform activation flows through LiveRamp directly or indirectly today. More than 30% is the signal to build an alternative before year-end.
The signal: The holdco war stopped being about creative and media. Now it's about the identity layer. For the client, the year's key decision is whether the match piece is contractually neutral or sits inside the agency. The second option is comfortable. The first is independent.
The Signal Brief · Mariano De Vitto — Head of Marketing, Barcelona