Spark Foundry

Mid-to-large challenger media agency within Publicis Media, positioned below Starcom in scale but competing for major global and national advertisers

Spark Foundry is a global media agency operating within Publicis Media, the media division of Publicis Groupe. It was established in 2017 as a rebranding of Mediavest|Spark, following the structural reorganization that separated the Starcom MediaVest Group into distinct agency brands. Positioning itself as a challenger agency with a 'startup spirit,' Spark Foundry differentiates from its larger Publicis Media siblings — Starcom and Zenith — by emphasizing agility, entrepreneurial culture, and a willingness to take unconventional approaches to media strategy. Spark Foundry provides a comprehensive suite of media services including media planning and buying, data analytics, audience strategy, performance media, content partnerships, and commerce media. The agency leverages Publicis Media's shared technology infrastructure — including the Epsilon data platform, Publicis Sapient digital capabilities, and the CoreAI AI platform — giving it enterprise-grade tools while maintaining a boutique agency feel. Its client roster has included major brands across CPG, retail, entertainment, and financial services categories. In the broader AdTech and media agency ecosystem, Spark Foundry competes directly with other mid-to-large holding company agencies such as Mindshare, MediaCom, and UM, as well as independent agencies. Its position within Publicis Groupe provides significant scale advantages in media buying, data access through Epsilon, and technology investment, while its challenger branding attempts to attract clients seeking a more dynamic agency culture than the largest global networks typically project.