You have probably read it everywhere by now : Publicis Groupe has announced the acquisition of LiveRamp for $2.2 billion in cash.
A year ago, that deal would mostly have been read as a classic way for the French group to strengthen its data capabilities. Except this is 2026, and the ad market has since been swamped by the agentic wave.
That shift is precisely what Publicis now puts forward to justify the deal: becoming a central player in the "agentic transformation", meaning the gradual automation of marketing workflows through AI agents able to execute, coordinate and optimise complex tasks.
The key point of the Publicis statement is in fact less the purchase of another data asset than the notion of "data co-creation". Behind the term, the group argues that the next AI battle will no longer be fought on the models themselves - the large LLMs becoming progressively available to everyone - but on companies' ability to generate exclusive, differentiating data to train their AI agents.
Carla Serrano, Publicis' chief strategy officer, sums up the idea in an interview with Adweek: "AI agents trained solely on public or siloed data end up producing relatively similar results from one company to the next."
This is where LiveRamp comes in. The company specialises in "data collaboration", meaning infrastructure that allows several companies to combine and exploit their data in secure environments - the clean rooms - without directly exposing their proprietary data. Those technologies are used to enrich audience segments, improve targeting models or build cross-platform measurement capabilities.
Publicis now wants to connect that infrastructure to several building blocks already inside its ecosystem. First Epsilon, the identity platform acquired in 2019 for close to $4 billion, which links CRM data, behaviours and actual transactions to deterministic consumer profiles.
Then Marcel, Publicis' internal AI platform, which the group now presents as an agentic layer able to activate that co-created data inside its clients' marketing and business workflows.
The positioning lands as LiveRamp itself is sharply accelerating its own move towards agentic AI.
1° The company is taking part in standardisation work around agentic advertising. LiveRamp has notably submitted its "User Context Protocol" to the IAB, a technical protocol meant to define how AI agents will be able to exchange signals, user context or targeting information in Open Web advertising environments.
2° The company has also just announced that its clients can plug their own AI agents directly into its data collaboration platform.
Concretely, advertisers, agencies, publishers or technology partners can now connect agents able to interact automatically with the different components of the LiveRamp ecosystem, without going through complex API development.
Agents can, for instance, automate audience segmentation, media activation, performance analysis or cross-platform measurement workflows. LiveRamp also now lets clients plug third-party or proprietary agents directly into its Data Marketplace, alongside the AI models and datasets available there since early 2026.
The stated ambition is clear: allow entire marketing workflows to be run agentically, from planning through to campaign optimisation, by combining first-party, second-party and third-party data in a single secure environment.
In its announcement, Publicis gives several very concrete examples of that logic - and not only media-related ones. The group imagines AI agents able to help a retailer anticipate stockouts by combining sales data, weather, promotional history and signals from distribution partners.
Another case cited: agents able to help an airline personalise its offers based on travel habits, CRM data, intent detected across various channels and purchase behaviours aggregated in secure clean rooms.
The general idea stays the same: the more enriched and collaborative the data available to AI agents, the more relevant their recommendations and automations become.
That has not escaped Publicis' competitors, and the move fits into a broader reshaping of the big advertising groups' data infrastructure.
A year ago, WPP acquired InfoSum, a clean room and data collaboration specialist, to strengthen its data activation capabilities. On the other side, the Omnicom-Interpublic Group merger could put Acxiom back at the centre of the game, IPG's historic data asset, specialised in CRM databases, identity and consumer data.
In other words, the big advertising holdcos are all now trying to control strategic layers of data, identity and collaboration capable of feeding their future agentic systems.
In 2025, Publicis had already announced the acquisition of Lotame, a data and digital identity specialist, to strengthen Epsilon's capabilities around targeting and consumer profile enrichment.
But where Lotame mostly allowed Publicis to build up its own data stack and activation capabilities, LiveRamp brings something far more strategic: a data collaboration and circulation infrastructure already used by a large share of the market.
Publicis is no longer simply reinforcing its internal data assets - which will probably need rationalising, since the group will now hold three separate identifiers (Core ID, Ramp ID and Lotame ID). With this acquisition, it is positioning itself on an infrastructure layer that has become strategic for the entire advertising ecosystem.
Publicis is suffocating the competition with this deal
Seen that way, the LiveRamp deal looks like a masterstroke for Publicis. "They are suffocating the competition," says the head of one media agency, half amused, half depressed.
But that build-up on such strategic layers of the advertising ecosystem is also starting to raise questions about the market's balance.
The main point of tension is now LiveRamp's neutrality. For years, the company has presented itself as an "interoperable" and independent infrastructure, used across the market, including by direct Publicis competitors. Arthur Sadoun and Scott Howe immediately insisted that this operational and commercial independence would be maintained.
That is far from a detail given LiveRamp's place in the advertising ecosystem. The platform claims more than 25,000 connected publisher domains and over 500 technology and data partners across 14 markets.
It is used today by large media agencies, advertisers such as Uber and Coca-Cola, but also platforms and media groups including Netflix, Spotify and Paramount for identity, data collaboration and measurement.
In France, a large share of the major publishers and broadcasters - from TF1 to Prisma Media and Leboncoin - already rely on LiveRamp infrastructure for identity, data collaboration or clean rooms.
That is exactly what is feeding market concerns. Several players fear seeing Publicis gradually stack the roles of consultancy, media buyer, technology vendor and now operator of data infrastructure used by the whole ecosystem.
"We are starting to confuse a consulting firm with a technology company"
"We are starting to confuse a consulting firm with a technology company," sums up the head of an independent media agency. "When Google, Meta, Publicis or Accenture all end up selling consulting, tools, data and activation capabilities at once, the objectivity question inevitably comes up."
Behind those questions sits a risk of a dominant position on certain strategic layers of the market. Publicis remains the world's largest media buyer and already carries considerable weight in its relationships with publishers and technology partners.
"When a group that accounts for a major share of your revenue also controls a key data collaboration infrastructure, the balance of power is inevitably skewed," our executive says.
Some fear bundling between media buying, data and technology infrastructure. Several players are already raising the risk of components like LiveRamp or Epsilon gradually becoming tools that reinforce the Publicis ecosystem rather than genuinely neutral infrastructure.
In the short term, though, few players look able to leave the LiveRamp ecosystem immediately. The company has built a considerable lead on clean rooms and data collaboration, with a network already widely adopted by buyers, retailers, publishers and platforms.
"Everyone will keep using LiveRamp for now because they got to the market first," our executive acknowledges.
Will Publicis be able to offset, through internal synergies with its clients and platforms, what it risks losing outside in market share?
Which leaves one central question: will Publicis be able to offset, through internal synergies with its clients and platforms, what it risks losing outside in market share? Because even if few players cut ties with LiveRamp immediately, some media groups, advertisers or competing agencies could gradually try to reduce their dependence on infrastructure controlled by their main competitor.
That could open a window for alternative clean room and data collaboration players such as Snowflake, Decentriq or Mediarithmics, the latter two also able to play the "made in Europe" card.
Several observers expect some media groups, retailers or competing agencies to try to rebalance their technology dependencies over the coming years, even if market inertia and integration costs remain significant.
For Publicis' competing agencies, large advertisers and some media platforms, the question becomes simple: how far are they willing to route strategic data workflows through infrastructure controlled by a direct competitor? Even with strong technical and contractual guarantees, the perception of neutrality has historically played a central role in the adoption of this kind of infrastructure.
Underneath it all, the acquisition confirms a structural trend: the big advertising groups are now building infrastructure capable of feeding proprietary AI agents with differentiating, secure data that can be activated at scale.
