diff --git a/workloads/ecommerce/components/catalog/catalog-client.tsx b/workloads/ecommerce/components/catalog/catalog-client.tsx
index d5b22dd..5cbf1cd 100644
--- a/workloads/ecommerce/components/catalog/catalog-client.tsx
+++ b/workloads/ecommerce/components/catalog/catalog-client.tsx
@@ -3,11 +3,19 @@
 import Link from "next/link";
 import { ChevronRight, SlidersHorizontal, X } from "lucide-react";
 import { useEffect, useMemo, useState } from "react";
+import { PromoTile } from "@/components/home/category-tiles";
 import { ProductCard } from "@/components/product/product-card";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import type { Category, Product } from "@/lib/headless/types";
 
+// Cada cuantas tarjetas de producto se intercala un tile promocional en
+// la grilla (patron Walmart, ADR 0005 seccion 3): grid con tiles
+// promocionales intercalados, no solo tarjetas homogeneas.
+const PROMO_TILE_INTERVAL = 8;
+
+type GridItem = { type: "product"; product: Product } | { type: "promo"; category: Category };
+
 type CatalogClientProps = {
   products: Product[];
   categories?: Category[];
@@ -96,6 +104,11 @@ export function CatalogClient({
   // trata como el nombre de categoria exacto de siempre.
   const allowedCategories = categoryGroups[category] ?? [category];
   const breadcrumb = useMemo(() => (category === "Todos" ? [] : buildBreadcrumb(categoryNodes, category)), [categoryNodes, category]);
+  // No promociona la misma categoria raiz que el usuario ya esta viendo.
+  const promoRoots = useMemo(() => {
+    const excludeRootId = breadcrumb[0]?.id;
+    return categoryNodes.filter((node) => !node.parentId && node.id !== excludeRootId);
+  }, [categoryNodes, breadcrumb]);
 
   const filtered = useMemo(
     () =>
@@ -119,6 +132,26 @@ export function CatalogClient({
     [age, allowedCategories, brand, category, collection, maxPrice, products, query, sort],
   );
 
+  // Intercala un tile promocional cada PROMO_TILE_INTERVAL productos,
+  // ciclando por las categorias raiz -- si no hay jerarquia de
+  // categorias disponible, la grilla queda igual que antes (solo
+  // productos).
+  const gridItems = useMemo<GridItem[]>(() => {
+    if (promoRoots.length === 0) return filtered.map((product) => ({ type: "product", product }));
+
+    const items: GridItem[] = [];
+    let promoIndex = 0;
+    filtered.forEach((product, index) => {
+      items.push({ type: "product", product });
+      const isLast = index === filtered.length - 1;
+      if (!isLast && (index + 1) % PROMO_TILE_INTERVAL === 0) {
+        items.push({ type: "promo", category: promoRoots[promoIndex % promoRoots.length] });
+        promoIndex += 1;
+      }
+    });
+    return items;
+  }, [filtered, promoRoots]);
+
   // Conteos por valor de filtro (patron Amazon: "Marca (12)"), calculados
   // sobre los productos que ya pasan el resto de filtros activos -- cada
   // dimension se cuenta excluyendose a si misma para reflejar cuantos
@@ -284,9 +317,13 @@ export function CatalogClient({
 
           {filtered.length ? (
             <div className="grid gap-5 sm:grid-cols-2 xl:grid-cols-3">
-              {filtered.map((product) => (
-                <ProductCard key={product.id} product={product} />
-              ))}
+              {gridItems.map((item, index) =>
+                item.type === "product" ? (
+                  <ProductCard key={item.product.id} product={item.product} />
+                ) : (
+                  <PromoTile key={`promo-${index}`} category={item.category} className="min-h-[22rem]" />
+                ),
+              )}
             </div>
           ) : (
             <div className="grid min-h-80 place-items-center rounded-3xl border border-dashed border-slate-300 text-center">
diff --git a/workloads/ecommerce/components/home/category-tiles.tsx b/workloads/ecommerce/components/home/category-tiles.tsx
index d9e8fa4..cff1d07 100644
--- a/workloads/ecommerce/components/home/category-tiles.tsx
+++ b/workloads/ecommerce/components/home/category-tiles.tsx
@@ -2,6 +2,7 @@ import Image from "next/image";
 import Link from "next/link";
 import { ArrowUpRight } from "lucide-react";
 import type { Category } from "@/lib/headless/types";
+import { cn } from "@/lib/utils";
 
 type TileContent = { subtitle: string; image?: string; color: string };
 
@@ -20,6 +21,37 @@ const tileContent: Record<string, TileContent> = {
 
 const defaultTile: TileContent = { subtitle: "Explora esta categoría", color: "from-slate-400 to-slate-600" };
 
+// Tile individual reutilizado tanto por la seccion de mundos del home
+// como por el grid del catalogo (tiles promocionales intercalados,
+// ADR 0005 seccion 3, patron Walmart) -- mismo primitivo visual, no un
+// componente nuevo.
+export function PromoTile({ category, className = "" }: { category: Category; className?: string }) {
+  const content = tileContent[category.handle] ?? defaultTile;
+
+  return (
+    <Link
+      href={`/catalog?category=${encodeURIComponent(category.name)}`}
+      className={cn(`group relative min-h-64 overflow-hidden rounded-[2rem] bg-gradient-to-br ${content.color} shadow-xl`, className)}
+    >
+      {content.image && (
+        <>
+          <Image src={content.image} alt={category.name} fill sizes="(max-width: 640px) 100vw, (max-width: 1024px) 33vw, 16vw" className="object-cover transition duration-500 group-hover:scale-105" />
+          <div className="absolute inset-0 bg-gradient-to-t from-slate-950/80 via-transparent to-white/5" />
+        </>
+      )}
+      <div className="absolute inset-x-0 bottom-0 flex items-end justify-between p-6 text-white">
+        <div>
+          <h3 className="text-xl font-black">{category.name}</h3>
+          <p className="mt-1 text-sm font-semibold text-white/80">{content.subtitle}</p>
+        </div>
+        <span className="grid size-11 shrink-0 place-items-center rounded-full bg-white text-slate-950 transition group-hover:rotate-45">
+          <ArrowUpRight />
+        </span>
+      </div>
+    </Link>
+  );
+}
+
 export function CategoryTiles({ categories }: { categories: Category[] }) {
   const roots = categories.filter((category) => !category.parentId);
 
@@ -35,33 +67,9 @@ export function CategoryTiles({ categories }: { categories: Category[] }) {
         <Link href="/catalog" className="hidden font-black text-cyan-700 sm:block">Ver todo →</Link>
       </div>
       <div className="grid gap-5 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-6">
-        {roots.map((category) => {
-          const content = tileContent[category.handle] ?? defaultTile;
-
-          return (
-            <Link
-              key={category.id}
-              href={`/catalog?category=${encodeURIComponent(category.name)}`}
-              className={`group relative min-h-64 overflow-hidden rounded-[2rem] bg-gradient-to-br ${content.color} shadow-xl`}
-            >
-              {content.image && (
-                <>
-                  <Image src={content.image} alt={category.name} fill sizes="(max-width: 640px) 100vw, (max-width: 1024px) 33vw, 16vw" className="object-cover transition duration-500 group-hover:scale-105" />
-                  <div className="absolute inset-0 bg-gradient-to-t from-slate-950/80 via-transparent to-white/5" />
-                </>
-              )}
-              <div className="absolute inset-x-0 bottom-0 flex items-end justify-between p-6 text-white">
-                <div>
-                  <h3 className="text-xl font-black">{category.name}</h3>
-                  <p className="mt-1 text-sm font-semibold text-white/80">{content.subtitle}</p>
-                </div>
-                <span className="grid size-11 shrink-0 place-items-center rounded-full bg-white text-slate-950 transition group-hover:rotate-45">
-                  <ArrowUpRight />
-                </span>
-              </div>
-            </Link>
-          );
-        })}
+        {roots.map((category) => (
+          <PromoTile key={category.id} category={category} />
+        ))}
       </div>
     </section>
   );