Publicis Collective wants to see the receipt.

In 2021, Gretchen Saegh-Fleming hired Performics while working at Hydrow. Five years later, she arrived on the other side of the table: chief executive of Publicis Collective, which now includes the business she had hired. An agency pitching an understanding of clients had acquired a leader who remembered being one. That is a useful place to begin understanding Collective. Its proposition depends on knowing what the person paying for the advertising actually needs.

A buyer crosses the table

Saegh-Fleming’s appointment was announced in January 2026. She had previously led global marketing and consumer experience at Volvo Cars. In her own account of joining Collective, she recalled wanting a job at Leo Burnett after college and failing to land it. The return to Publicis carried a personal twist. Her appointment also invites a practical question: how does an agency look when its leader has recently been responsible for buying its services?

Collective describes itself as a full-service media agency. The offer brings together strategy, planning, buying, data, technology, commerce and performance in teams assembled for large clients. Its own phrase is Connected by what matters most - outcomes. The emphasis shifts the conversation toward what an advertiser wants the spending to accomplish: acquiring customers, improving sales or changing behavior. Those objectives require more than knowing whether an ad appeared on a screen.

A billion-dollar assignment is a coordination problem

Consider Pfizer. In May 2023, the pharmaceutical company appointed Collective to global media duties. Reporting described the agency working with the wider Publicis team across planning, buying, data, technology and creative production. An assignment like that makes coordination part of the product. A buyer needs people who can translate a common objective into different markets, media choices and production requirements without losing the original question.

COMvergence’s 2023 review reported $1.2 billion in Collective’s global wins, 30 percent annual growth and more than 350 new teammates. Keep the dollar figure in its proper drawer: it describes media business won. It is not money the agency booked as revenue. The distinction matters because the agency manages an advertiser’s spending while supplying the expertise that decides where it goes.

Collective belongs to Publicis Media, within Publicis Groupe. Its competitive argument rests partly on access to that larger organization’s resources and capabilities. Alternatives include WPP Media, Omnicom’s media agencies, dentsu and independent agencies such as Horizon Media. For a client considering Collective, the question is whether a coordinated team can turn those resources into better decisions.

The sale after the screen

A Malibu Rum campaign offers a concrete view of the measurement ambition. Snapchat’s account credits Publicis Santé with the campaign and quotes Collective executive Allie Kelly. It combined an augmented-reality Lens with several advertising formats around the “Clock Off” creative idea. NCSolutions measured sales impact over an April-to-September 2025 period. Snapchat reports an 8.52 percent sales lift and 3.22 times return on ad spend, with 86 percent of incremental sales coming from new customers.

Those are results from one campaign, involving several partners. They do not establish an agency-wide average or prove that Collective’s software caused the improvement. Their value here is the question being asked. Did the campaign bring additional buyers to the brand? That moves the conversation beyond exposure. It also makes room for creative work to be judged by what customers subsequently do.

An operating system still needs operators

Collective’s recruitment materials describe a proprietary operating system that gives practitioners access to advanced insights. The revealing details sit further down the job descriptions. Paid-social work includes campaign setup, documentation, quality assurance, reporting and billing reconciliation. Paid-search roles call for keyword research, ad copy and campaign architecture, alongside using advertising platforms’ AI features. These are specific tasks, with plenty of opportunities for a careless handoff to become an expensive mistake.

Publicis Groupe announced a €300 million, three-year AI investment plan in January 2024. That is parent-company spending, rather than a funding round for Collective. It helps explain the infrastructure surrounding the agency, but a client still needs to ask what a particular team will deliver. Software can make information accessible; someone must decide which information deserves attention and which action follows.

“Connected by what matters most - outcomes.”Publicis Collective

Research is another part of the offer. Intent Lab, a collaboration with Northwestern University’s Medill School, has examined consumers’ attitudes toward ordering from quick-service restaurants online. Its questions include motivations, ordering tools and personalization. That work starts before the media purchase. It asks why a person might buy, or hesitate, giving planners something more useful than a channel’s promise of available reach.

The work has also included a different kind of budget. In 2023, Collective handled media for the ANA’s Engage Responsibly campaign against online hate. Ogilvy supplied creative, participating platforms and publishers donated placements, and partners worked pro bono. The example shows how the same coordination skills can serve a public-service brief. Someone still has to bring the message, audience and distribution together. Donated time changes the commercial arrangement; it does not remove the need to organize the work.

Curiosity, with an expense policy

Collective names curiosity, openness and drive among its values. The careers page puts some practical detail behind the vocabulary: education reimbursement up to $5,000 a year, charity matching and pet adoption stipends. A learning culture matters here because the work keeps moving between disciplines. A planner who understands measurement can ask a better question of an analyst. An analyst who understands the client’s business can challenge a misleading result.

For a prospective client, the sensible starting point is a specific outcome and an agreed way to measure it. Ask who owns each decision, how specialists will work together and what evidence would change the plan. This approach needs usable data and enough time to learn. Where purchases cannot be observed reliably, or teams cannot agree on success, a more elaborate media operation can simply produce a more elaborate argument. Collective’s proposition is most interesting at the moment a team can point to a result and explain what it will do differently tomorrow.