A digital screen displaying food imagery hangs above refrigerated shelves inside a supermarket. As grocery stores increasingly turn store aisles into digital billboards, in-store advertising is reshaping how brands reach shoppers. For generations, walking down the grocery store aisle was a relatively analog experience. Shoppers pushed carts past static cardboard endcaps, paper promotional banners, and printed shelf tags that remained unchanged for weeks at a time. Supermarkets are no longer just physical warehouses for food and household goods; they have rapidly evolved into media powerhouses.