Retail Media & FMCG Agency: run your media on real sell-out
Retail media, brand, and performance tied to incremental sell-out measurement. CPG marketing driven by data, not gut feeling.
In FMCG, your shelf sells while your ad platforms claim credit for the same sales. Purchases are decided in-store or on Amazon, yet last-click attribution lies to you about what actually drives sell-out. Junto connects your media (Amazon Ads, Sponsored placements, retail media, Meta, Google, YouTube) to our data.junto.fr platform: geo tests, incrementality analysis, and MMM tell you which euro of spend generates a real sale on the shelf or the marketplace, not a recycled one. You arbitrate brand versus performance with a hard number, defend your media budget in front of the sales organization, and benchmark your results against 350+ brands. Concrete outcome: Franprix cut its CPA by 2 to 3x depending on the platform while multiplying its sales volume by 7.
More than 400+ marketing teams work with Junto every day
Junto has developed a unique method to structure and manage your account to perfection.
Our method
Our method for turning FMCG media into measurable sell-out growth, from retail media to incremental measurement.
1. Map the purchase journey and sell-out
We reconstruct the shopper's real path: media discovery, search, marketplace, click-and-collect, shelf. We connect your sell-out data (retail data, panels, checkout scans, Amazon sales) to your media channels to see where the sale is actually decided, not where the last click happens to land.
2. Structure retail media and the full funnel
We activate and structure Amazon Ads, Sponsored Products, and retail media alongside Meta, Google, YouTube, and programmatic. Brand at the top of the funnel for category awareness, performance at the bottom for conversion: one coherent system, not silos cannibalizing each other. That's how Franprix tripled its media investment while keeping CPA under control.
3. Measure the media's true incrementality
The heart of the system. Through data.junto.fr we run geo tests and incrementality analyses: we switch off media in control zones and measure the gap in sell-out. You finally know which channel generates additional sales and which one merely claims credit for sales you already had.
4. Model the mix with MMM
Marketing Mix Modeling ties all your levers (online and offline media, promotions, distribution, seasonality) to sell-out. You get the true contribution of every euro and the saturation curve per channel, so you can arbitrate brand versus performance on numbers and reallocate toward what actually moves the shelf.
5. Drive to retail and manage cohorts
We optimize media toward the point of sale and the marketplace: drive-to-store, drive-to-Amazon, store locator, product availability signals. We track value by buyer cohort (repurchase frequency, basket size, LTV) to invest in the shoppers who buy again, not just in the first purchase.
6. Benchmark and reallocate continuously
Your CPA, ROAS, and incrementality are compared against the Junto Benchmark of 350+ brands. Every month we reallocate budget toward the most incremental channels, document the sell-out impact, and hand you the numbers to defend the media budget internally in front of the sales organization.
At Junto, we build FMCG brands that measure media's true impact on their sell-out.
Certified partners of the most powerful e-commerce platforms
Meta, Google, Amazon, Amazon Ads, retail media, TikTok, and more. We're certified by the players shaping online commerce. Why does that matter? Because these partnerships give us access to exclusive insights, advanced tools, and growth strategies proven at scale. In short: we don't guess, we optimize.
A team of multidisciplinary experts
Our people are hand-picked from the most advanced schools and companies in their respective fields. They work hand in hand to deliver concrete answers and results, day in and day out.
Move your Food & FMCG acquisition to data-driven, high-performance management
Explore our Galeries Lafayette - Le Gourmet case study
+93%de chiffre d'affaires
Les Galeries Lafayette Le Gourmet ont fait appel à Junto pour accroître la visibilité de leur e-shop gastronomique. Grâce à une stratégie SEO complète, l’objectif était de renforcer la présence du site sur les requêtes clés de son marché et de générer un trafic qualifié, au service de la performance business.
Explore our La Thé Box case study
+500K€investis pour développer les ventes et optimiser le ROAS
La Thé Box propose un abonnement mensuel livrant une sélection de thés. Junto a accompagné la marque pour améliorer sa rentabilité et soutenir sa croissance digitale.
Explore our Quitoque case study
÷3du CPA sur Meta
La collaboration entre Junto et Quitoque a permis à la marque de diminuer significativement le Coût par acquisition des nouveaux clients. Les campagnes digitales de la marque ont ainsi gagné en rentabilité tout en améliorant leur portée.
Explore our Lentilles moins chères case study
-10 €diminution du CPA
Lentilles Moins Chères souhaitait développer sa base de nouveaux clients tout en maintenant une rentabilité optimale dans un univers très concurrentiel. En activant une stratégie orientée data et CRM, l'entreprise a pu réduire le coût d’acquisition tout en optimisant la gestion du repeat business.
Explore our Vestiaire Collective case study
-15%diminution du CPA
Vestiaire Collective, référence de la mode de seconde main, a sollicité Junto pour structurer sa stratégie Google Ads à l’international et améliorer la rentabilité de ses campagnes SEA via un pilotage expert et une équipe dédiée.
Frequently asked questions about retail media, sell-out measurement, and acquisition in FMCG and CPG.
How do you measure media's real impact on in-store sales (sell-out)?
We don't rely on last-click, which overstates lower-funnel media. Through data.junto.fr we combine geo tests (switching off media in control zones and measuring the gap in sell-out) with MMM (tying media, promotions, distribution, and seasonality to checkout data). You get each channel's true incremental contribution to sell-out, on the shelf and on the marketplace alike. This is the measurement that let Franprix multiply its sales volume by 7 while keeping CPA in check.
What is retail media, and should you invest in Amazon Ads?
Retail media is advertising placed directly where people buy: Amazon Ads, Sponsored Products, retailers' own retail media networks. It has become a central lever in FMCG because the purchase is triggered right at the point of conversion. The real question isn't whether to invest but how much: we determine that through measured incrementality, not claimed market share. We structure retail media alongside Meta, Google, and YouTube within one coherent full-funnel system.
How do you arbitrate between brand and performance in CPG?
With a number, not a conviction. Brand builds category preference over the medium term; performance converts in the short term. Our MMM measures each one's contribution to sell-out and its saturation curve: you know at what point brand saturates and when performance plateaus. You reallocate budget toward the right balance and defend it in front of leadership with data.
Why Junto rather than a traditional media agency for FMCG?
A traditional media agency optimizes platform ROAS, which can climb while your real sales stagnate. Our difference is data.junto.fr: we measure incrementality on sell-out, benchmark your results against 350+ brands, and bring media, retail data, and MMM together in a single view. You make decisions on real sales generated, not on a platform metric. That's how Galeries Lafayette Le Gourmet gained +93% in revenue and Nutrivita +€80K.
How do you run and measure drive-to-retail?
We optimize media to push toward the point of sale and the marketplace: drive-to-store and drive-to-Amazon campaigns, store locator, product availability signals, geo targeting around store catchment areas. On the measurement side, geo tests isolate media's effect on store traffic and sales, and MMM ties it to overall sell-out. You're no longer flying blind between online and offline.
How long before you see results on an FMCG account?
Media performance (CPA, ROAS, volume) moves within the first weeks of optimization and full-funnel restructuring. A solid incremental read (geo tests, first MMM iteration) typically takes 2 to 3 months of data to be reliable. That's the window that turns tactical optimization into strategic sell-out management, and it's what allowed brands like Franprix to triple their investment without letting CPA slip.