Sir Martin Sorrell's S4S Ventures leads Olyzon's $10m Series A to build the Agentic platform for CTV

Olyzon, a Paris-based company specializing in agentic decisioning for Connected TV (CTV) advertising, has successfully closed a $10 million Series A funding round. The round was led by S4S Ventures, with participation from existing investor Eurazeo and others. This funding announcement was made on May 27, 2026, and is set to bolster Olyzon's mission of establishing a comprehensive platform for CTV media buying, which is increasingly crucial as the industry continues to evolve.

Olyzon's platform aims to address a significant gap in the CTV advertising ecosystem by providing an intelligence layer that integrates planning, activation, and measurement. The company has already established partnerships with major brands, including Mastercard, Audi, and McDonald's, demonstrating its capability to deliver measurable results in a rapidly growing market. The funding will be utilized to expand Olyzon's operations in the United States and to establish a new office in London, thereby enhancing its presence in the EMEA region ahead of the Cannes Lions festival.

The strategic rationale behind this investment lies in the increasing complexity of CTV advertising, characterized by a proliferation of content delivery channels and fragmented measurement tools. As brands seek more effective ways to navigate this landscape, Olyzon's technology, which leverages AI agents to optimize media buying processes, positions the company as a critical player in the adtech sector. Sir Martin Sorrell, co-founder of S4S Ventures, emphasized that Olyzon's platform does not replace existing demand-side platforms (DSPs) or measurement partners but rather orchestrates them to achieve superior results.

The CTV advertising sector has been experiencing rapid growth, driven by changing consumer behaviors and the shift towards digital media consumption. With the rise of programmatic advertising, there is an increasing demand for solutions that can streamline the buying process and enhance campaign effectiveness. Olyzon's focus on building an agentic platform aligns with these industry trends, as it aims to provide brands with the tools they need to effectively engage audiences across various CTV channels.

Looking ahead, the successful completion of this funding round signals strong investor confidence in Olyzon's vision and the potential for growth within the CTV advertising space. As the company prepares for its expansion and product development, it is well-positioned to capitalize on the ongoing transformation of the advertising landscape. The upcoming Cannes Lions festival will serve as a platform for Olyzon to showcase its advancements and further solidify its position in the market.