Zenith

One of the top global media agencies by billings, positioned as a data-driven ROI specialist within Publicis Groupe's media agency portfolio

Zenith is a leading global media agency operating under Publicis Groupe, one of the world's largest communications groups. Founded in 1988 and headquartered in London, Zenith has built its reputation as the 'ROI Agency,' emphasizing measurable returns on media investments through rigorous data analysis, audience insights, and performance optimization. The agency operates across more than 95 markets worldwide, serving a diverse portfolio of multinational and local clients across sectors including FMCG, automotive, finance, and technology. Zenith's core offering spans media strategy, planning, and buying across all channels — including digital, programmatic, TV, out-of-home, and print. The agency leverages proprietary tools and Publicis Groupe's shared technology infrastructure, including the Publicis Media Exchange (PMX) for consolidated buying power, and platforms like Epsilon for data and identity solutions. Zenith is also known for its annual Advertising Expenditure Forecasts, a widely cited industry report tracking global ad spend trends. Within the AdTech and media agency ecosystem, Zenith competes directly with other major holding company agencies such as GroupM's Mindshare and MediaCom, IPG Mediabrands' UM and Initiative, and Omnicom Media Group's OMD and PHD. Its integration within Publicis Groupe gives it access to significant technology assets, data capabilities, and scale, positioning it as a strong contender for large enterprise media mandates globally.