Publicis announced that it has agreed to acquire LiveRamp for $2.167 billion. The press release says the deal would strengthen Publicis’ capability in “data co-creation” — a phrase that will wash over most marketers and non-AdTech people.
Let’s try to unpack this acquisition.
Publicis has a good track record of transformational digital commerce and retail media acquisitions over the years: digital shelf capabilities with Profitero, data with Epsilon, retail media tools with Citrus, and digital marketing and technology with Sapient, Digitas and Razorfish. In 2024, it bought commerce marketing agency Mars United Commerce for $600m.
Publicis claims the LiveRamp deal is important to gain a foothold in the AI agentic business market and increase its footprint in the world of retail media.
What does LiveRamp do?
LiveRamp is used by brands, retailers, media platforms and data providers to connect data securely. It is known as one of the biggest names in what are called “data clean rooms”. LiveRamp has around 1,300 employees and connects more than 25,000 publishers and more than 500 technology and data partners across 14 markets.
LiveRamp has an interesting history. It was founded in 2011 and Acxiom acquired it in 2014 for $310 million. In 2018, IPG bought Acxiom’s Marketing Solutions business, and the remaining Acxiom entity rebranded as LiveRamp. Over the years, it picked up several data and identity-matching businesses, including Arbor, Circulate, Pacific Data Partners and TV analytics firm Data Plus Math.
Why is Publicis buying LiveRamp?
Publicis CEO Arthur Sadoun positions the LiveRamp acquisition as the next big chapter after Publicis bought Epsilon in 2019. His argument runs like this: Epsilon helped clients move from cookie-based targeting to connecting to actual people, behaviours and transactions.
Publicis says the combination of Epsilon’s identity capabilities with LiveRamp’s clean rooms, publisher data and technology partners will create a stronger data co-creation capability. The promised land is that Publicis clients can collaborate more securely, create proprietary intelligence, and continuously train AI models with integrated, anonymised and dynamic data.
The pitch from Publicis is that Epsilon provides the identity layer, LiveRamp adds partner data collaboration and clean-room capability, and Marcel is the agentic platform that activates data across enterprise functions.
Why this matters for retail media?
The retail media use case Publicis describes is the most concrete example of what this new acquisition can deliver. In its press release, Publicis used the example of how a retailer could build a retail journey agent by connecting CRM, loyalty programme data, in-store data, retail media network inventory and partner data, all in one place. The retailer could then measure incrementality across every touchpoint and build proprietary shopper journeys.
This is a big claim. Right now, most retail media networks struggle to connect their own first-party data cleanly, let alone combine it with brand partner data and external signals. The measurement problem — proving that a retail media investment actually drove incremental sales — remains the hardest nut to crack.
If Publicis can genuinely deliver tighter integration between LiveRamp’s clean-room capability and Epsilon’s identity graph, it has a legitimate claim to be solving a real problem for retailers and their agency partners.
The competitive context for the advertising holding companies
The large advertising holding companies are assembling end-to-end commerce and retail media stacks — identity, data collaboration, measurement, content, shelf, and now AI agents — at a pace and price that makes organic build almost impossible for rivals.
John Wren, the then CEO of Omnicom, made a comment at the time of their Flywheel acquisition that still applies here. His technology team told him it would take five years and comparable investment to replicate what Flywheel had built. The same logic applies to what Publicis is constructing. Each acquisition adds a capability that compounds the value of the others. Epsilon alone was useful but. Epsilon plus LiveRamp plus Marcel is a different proposition.
The competitive question
LiveRamp’s value to the broader market has always rested on its neutrality. It operates across the industry, connecting publishers, retailers, brands and data providers who may be competitors of each other. That neutrality is part of the product.
Publicis has been careful to state that LiveRamp will continue to honour existing contractual commitments and will not use data beyond what those agreements permit.
What remains to be seen is whether the independent market — the retailers, publishers and brands who are not Publicis clients — continues to trust LiveRamp as neutral. Some will be comfortable with the assurances, but it will weaken any perceived neutrality.
This was a problem for the LiveRamp clean-room competitor InfoSum when it was bought by WPP, another advertising holding company, a few years ago. Brands and retailers who were not part of the WPP network did not want to work with a business where they would be handing over data to an entity that had direct relationships with competitors.
The real potential: Amazon Marketing Cloud?
The core proposition of LiveRamp is its data clean-room capability. The take-up of clean rooms has been restricted to larger brands and retailers due to the sheer cost of set-up and running, as well as the capability needed to use them properly.
The “big kahuna” of retail media, Amazon Ads, has a data clean room in the form of Amazon Marketing Cloud, which has had traction with brands large and small due to the insights on offer.
Perhaps this is Publicis’ attempt to build out an AMC-like proposition? The building blocks are there, and the press release even mentions that the new Publicis tech stack can “generate proprietary intelligence: by creating new data assets from unique combinations of signals and datasets, unlocking hidden insights that drive smarter strategies and a sustainable competitive AI advantage.”
The LiveRamp acquisition makes Publicis AMC-like in ambition. However, it still cannot match the depth and breadth of shopper signals, transactions and retail media inventory that Amazon has inside its own ecosystem. At present, Publicis has a partnership with grocery chain, Carrefour, which could, in theory, provide shopper signals. In practice, this is not the scale that Amazon has, and Carrefour is very country specific. Maybe the next Publicis acquisition will aim to solve this problem!
