How to Use Retail Media to Win Competitive Market Share

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Most brands use retail media theway they use a fence — to protect what's already theirs. Sponsored placementson their own product pages, defensive keyword bids on their own brand name,promoted listings that basically just remind existing customers they exist. That's fine. It's also leaving the more interesting play on the table.

Retail media is one of the only channels where you can put your product directly in front of someone who is, at that exact moment, actively comparing you to a competitor. That's not brand awareness. That's a purchase decision happening in real time, and you get to bepart of it.

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The Conquesting Play Most Brands Skip

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Bidding on a competitor's product page or branded search term inside a retailer's platform feels aggressive to some marketing teams, which is exactly why so few of them do itwell. But think about what's actually happening: a shopper searched for orlanded on a competing product, which means they're in the market for the category right now, not some day.

Showing up on that page with astrong offer, a clear differentiator, or simply better creative isn't a dirtytrick — it's the same thing that's always happened at the physical shelf, justdigitized. Every CPG brand has been fighting for eye-level shelf space next tocompetitors for decades. Retail media conquesting is that fight, just on aproduct detail page instead of an aisle..

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Where to Actually Look for Share Gains

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Start with categories where you're the clear second or third player. Those are the shoppers most worth intercepting, because they're not brand-loyal yet — they're evaluating. Look atretailer-provided category reports to find where competitors are gaining orlosing velocity, and match media investment to the moments that data shows areactually shifting.

Seasonal and promotional windowsmatter more here than almost anywhere else. If a competitor runs a priceincrease, a reformulation, a recall, or even just a stockout, that's a window.Retail media is fast enough to move into that gap while it's still open, whichis more than you can say for a lot of traditional media planning cycles.

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Measuring Whether It's Actually Working

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Share gain from conquesting campaigns doesn't always show up as a clean, attributable sale — sometimes it shows up as a slower erosion of a competitor's share over a quarter, or ashopper who switches after three exposures instead of one. Track category share alongside your own sales, not just your own sales in isolation. If your numbers are flat but the competitor's are dropping, that's not nothing.

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The Bottom Line

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Playing defense in retail mediakeeps what you already have. Playing offense is how you actually grow. If your retail media strategy has never touched a competitor's page, you're only using half the tool.

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Five Eighty builds retail mediastrategies that go on offense, not just defense. If you're ready to startpulling share instead of just protecting it, we should talk.

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