The AI brain sitting on top of Connected TV - qualifying, planning, activating and measuring campaigns across every DSP, SSP and publisher.
Connected TV was supposed to be the tidy future of advertising: streaming's precision married to the living-room screen. Instead it arrived fragmented. Brands buy inventory in bundles - by genre, by network - with little visibility into where their ads actually run, and even less certainty about whether anyone watched. Olyzon, a Paris-born company founded in 2024, is building the layer that was missing.
The company describes itself plainly: a buy-side decisioning and orchestration layer for CTV advertising, agnostic across every demand-side platform, supply-side platform and direct publisher. Rather than owning inventory or replacing the tools brands already use, Olyzon sits on top of them. Its AI agents take a campaign brief, map the available inventory at the program level, score which shows will resonate, adapt the creative to the viewing context, activate across the existing stack, and feed the measured outcomes back into the next decision - a continuous loop instead of a static report.
The pitch has drawn serious money and serious names. In May 2026 Olyzon closed a $10 million Series A led by S4S Ventures, the firm co-founded by Sanja Partalo and Sir Martin Sorrell - the man who built WPP into the world's largest advertising group. Combined with a 2024 seed round and a 2025 seed extension, the company has raised roughly $17 million in about two years.
"Their platform doesn't replace existing DSPs or measurement partners, it orchestrates them with speed and precision human teams cannot achieve."Sir Martin Sorrell - S4S Ventures
Figures as reported by Olyzon and its post-campaign studies; treat as approximate, self-reported metrics.
Olyzon's decision layer runs five core functions. Together they turn a brief into a live, cross-platform CTV plan - and turn the results back into the next plan.
Parses bid-request data and electronic program guides to identify the shows actually airing, surfacing program-level supply across the stack.
Predicts which programs will resonate with a campaign's audience and goals, building contextual segments rather than blunt genre bundles.
Aligns creative to viewing context and generates immersive formats - interactive overlays, squeeze-backs, pause ads and QR codes.
Executes decisions into the brand's existing DSPs, SSPs and direct publishers - Olyzon orchestrates, it does not replace.
Normalizes measurement signals into unified KPIs and feeds results back, so every campaign informs the next decision.
Map, score, adapt, activate, prove - continuously. The three pillars underneath: context transparency, deduplicated reach and outcome accountability.
Plenty of adtech firms bolted "AI-powered" onto existing products. Olyzon's founders argue the difference is architectural: the company was built AI-native from the tech to the team structure to the strategy. Its edge is orchestration - being agnostic across the whole stack rather than owning a walled garden.
It also leans on a quirk of how people watch: over 95% of viewers have a phone in hand while the TV plays. Olyzon treats that second screen as an ad surface, enabling TV-to-phone interactions instead of fighting the distraction.
"I wanted to build a company where AI is the foundation. Where the tech, the team structure and the strategy are all designed for where the industry is going, not where it's been."Jules Minvielle - CEO & Co-founder
Serial adtech founder on his third company, after co-founding Ogury and Mozoo. Relocated from France to New York to lead Olyzon's growth.
Co-founder, part of the founding team that launched Olyzon across Paris and New York in 2024.
Co-founder, building the AI-native engineering foundation behind Olyzon's agentic platform.
| Round | Amount | Date | Lead / Investors |
|---|---|---|---|
| SEED | €3.0M | Jun 2024 | Eurazeo, Ventech, Kima Ventures, angels |
| SEED EXT. | $5M | Jun 2025 | Cassius Capital (lead), Ventech, Eurazeo |
| SERIES A | $10M | May 2026 | S4S Ventures (lead), Eurazeo |
"Olyzon combines deep trading expertise with agentic architecture to fill the missing intelligence gap in CTV buying."Sanja Partalo - S4S Ventures
Since launching in 2024, Olyzon says it has powered hundreds of CTV campaigns for global brands and agency groups. Publicly cited names include:
US Connected TV ad spend is projected at roughly $33.5-38 billion in 2026, climbing toward $52.53 billion by 2029. The dollars are moving to streaming faster than the infrastructure carrying them can adapt.
Olyzon's bet is that the decisioning layer - not the inventory - is where the next decade of adtech gets decided. It competes less with any single tool and more with the manual, fragmented status quo of agency trading desks.
Collaboration to facilitate the delivery of innovative advertising campaigns on CTV.
Integration connecting Olyzon's CTV decisioning with independent cross-platform measurement.
Lead Series A investor - strategic backing from Sir Martin Sorrell and Sanja Partalo on the future of agentic advertising.
Serial founder Jules Minvielle launches an AI-native CTV company, raising a €3M seed from Eurazeo, Ventech and Kima Ventures.
A $5M seed extension led by Cassius Capital accelerates US growth and scales the agentic platform.
Sir Martin Sorrell and Sanja Partalo lead a $10M round; Olyzon opens a London office ahead of Cannes Lions.
It provides an AI-powered decisioning and orchestration layer for Connected TV advertising - agents qualify inventory, plan and activate campaigns, adapt creative, and measure outcomes across every DSP, SSP and publisher.
Founded in 2024 by Jules Minvielle (CEO) - a serial adtech founder behind Ogury and Mozoo - with co-founders including Martin Danet and Mathieu Desve.
Roughly $17M total: a €3M seed (2024), a $5M seed extension led by Cassius Capital (2025), and a $10M Series A led by S4S Ventures (2026).
No. It is designed to be agnostic and orchestrate existing DSPs, SSPs, publishers and measurement tools rather than replace them.
Publicly cited clients include DoorDash, LVMH, Mastercard, Audi, IKEA, Red Bull, Nissan and Caesars, alongside agency groups such as Publicis and WPP.