diff --git a/workloads/ecommerce/app/api/cart/address/route.ts b/workloads/ecommerce/app/api/cart/address/route.ts
new file mode 100644
index 0000000..18ea6b9
--- /dev/null
+++ b/workloads/ecommerce/app/api/cart/address/route.ts
@@ -0,0 +1,14 @@
+import { setShippingAddress } from "@/lib/headless/providers/medusa-cart";
+
+export async function POST(request: Request) {
+  const { cartId, ...address } = await request.json();
+  if (!cartId || !address.firstName || !address.address1 || !address.city || !address.phone || !address.email) {
+    return Response.json({ error: "Faltan campos obligatorios de la dirección" }, { status: 400 });
+  }
+  try {
+    const cart = await setShippingAddress(cartId, address);
+    return Response.json(cart);
+  } catch (error) {
+    return Response.json({ error: (error as Error).message }, { status: 502 });
+  }
+}
diff --git a/workloads/ecommerce/app/api/cart/shipping-method/route.ts b/workloads/ecommerce/app/api/cart/shipping-method/route.ts
new file mode 100644
index 0000000..1083594
--- /dev/null
+++ b/workloads/ecommerce/app/api/cart/shipping-method/route.ts
@@ -0,0 +1,14 @@
+import { addShippingMethod } from "@/lib/headless/providers/medusa-cart";
+
+export async function POST(request: Request) {
+  const { cartId, optionId } = await request.json();
+  if (!cartId || !optionId) {
+    return Response.json({ error: "cartId y optionId son obligatorios" }, { status: 400 });
+  }
+  try {
+    const cart = await addShippingMethod(cartId, optionId);
+    return Response.json(cart);
+  } catch (error) {
+    return Response.json({ error: (error as Error).message }, { status: 502 });
+  }
+}
diff --git a/workloads/ecommerce/app/api/cart/shipping-options/route.ts b/workloads/ecommerce/app/api/cart/shipping-options/route.ts
new file mode 100644
index 0000000..eaa08e5
--- /dev/null
+++ b/workloads/ecommerce/app/api/cart/shipping-options/route.ts
@@ -0,0 +1,14 @@
+import { getShippingOptions } from "@/lib/headless/providers/medusa-cart";
+
+export async function GET(request: Request) {
+  const cartId = new URL(request.url).searchParams.get("cartId");
+  if (!cartId) {
+    return Response.json({ error: "cartId es obligatorio" }, { status: 400 });
+  }
+  try {
+    const options = await getShippingOptions(cartId);
+    return Response.json({ options });
+  } catch (error) {
+    return Response.json({ error: (error as Error).message }, { status: 502 });
+  }
+}
diff --git a/workloads/ecommerce/app/checkout/page.tsx b/workloads/ecommerce/app/checkout/page.tsx
new file mode 100644
index 0000000..875e38d
--- /dev/null
+++ b/workloads/ecommerce/app/checkout/page.tsx
@@ -0,0 +1,5 @@
+import { CheckoutClient } from "@/components/checkout/checkout-client";
+
+export default function CheckoutPage() {
+  return <CheckoutClient />;
+}
diff --git a/workloads/ecommerce/components/cart/cart-drawer.tsx b/workloads/ecommerce/components/cart/cart-drawer.tsx
index e8c20b8..b370db3 100644
--- a/workloads/ecommerce/components/cart/cart-drawer.tsx
+++ b/workloads/ecommerce/components/cart/cart-drawer.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import Image from "next/image";
+import Link from "next/link";
 import { Minus, Plus, ShoppingBag, Trash2 } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import { Progress } from "@/components/ui/progress";
@@ -17,13 +18,6 @@ export function CartDrawer() {
   const progress = pricedItems ? Math.min(100, (subtotal / FREE_SHIPPING_THRESHOLD) * 100) : 0;
   const count = items.reduce((sum, item) => sum + item.quantity, 0);
 
-  const checkout = () => {
-    const lines = items.map((item) => `• ${item.quantity} x ${item.product.name}`).join("\n");
-    const message = `Hola Ari Shopping 👋\nQuiero consultar disponibilidad para:\n\n${lines}\n\nNombre:\nCiudad:\nForma de entrega:`;
-    void navigator.clipboard?.writeText(message);
-    window.open(process.env.NEXT_PUBLIC_WHATSAPP_URL ?? "https://wa.link/rvcqqc", "_blank", "noopener,noreferrer");
-  };
-
   return (
     <Sheet open={isOpen} onOpenChange={(open) => { if (!open) closeCart(); }}>
       <SheetContent>
@@ -49,7 +43,15 @@ export function CartDrawer() {
         <div className="space-y-4 border-t border-slate-100 p-6">
           <div><div className="mb-2 flex justify-between text-xs font-bold text-slate-600"><span>{pricedItems ? "Progreso para envío gratis" : "Cotización personalizada"}</span><span>{pricedItems ? `${Math.round(progress)}%` : "Por confirmar"}</span></div><Progress value={progress} /></div>
           <div className="flex items-center justify-between"><span className="font-bold text-slate-600">Subtotal</span><strong className="text-xl font-black">{pricedItems ? formatMoney(subtotal) : "Por confirmar"}</strong></div>
-          <Button variant="primary" size="lg" className="w-full" disabled={!items.length} onClick={checkout}>Continuar por WhatsApp</Button>
+          {/* Button asChild + disabled no funciona sobre un <a> (:disabled
+              es pseudo-clase de elementos de formulario, un Link nunca la
+              cumple) -- se ramifica en vez de confiar en el prop disabled
+              sobre un Link. */}
+          {items.length > 0 ? (
+            <Button asChild variant="primary" size="lg" className="w-full"><Link href="/checkout" onClick={closeCart}>Confirmar pedido</Link></Button>
+          ) : (
+            <Button variant="primary" size="lg" className="w-full" disabled>Confirmar pedido</Button>
+          )}
           <Button variant="ghost" className="w-full" disabled={!items.length} onClick={clearCart}>Vaciar carrito</Button>
         </div>
       </SheetContent>
diff --git a/workloads/ecommerce/components/checkout/checkout-client.tsx b/workloads/ecommerce/components/checkout/checkout-client.tsx
new file mode 100644
index 0000000..ee6db1d
--- /dev/null
+++ b/workloads/ecommerce/components/checkout/checkout-client.tsx
@@ -0,0 +1,184 @@
+"use client";
+
+import Image from "next/image";
+import Link from "next/link";
+import { ArrowLeft, MapPin, MessageCircle, Truck } from "lucide-react";
+import { type FormEvent, useState } from "react";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { formatMoney } from "@/lib/utils";
+import { useCartStore } from "@/store/cart-store";
+
+// ADR 0009, siguiente corte tras el carrito real: direccion + seleccion de
+// envio contra el Store API real (mismos endpoints ya verificados en vivo
+// para las shipping options). El pago (PayU custom) todavia no existe --
+// el ultimo paso sigue siendo WhatsApp, ahora con el pedido completo
+// (direccion, envio, total real) en vez de solo la lista de productos.
+
+interface ShippingOption {
+  id: string;
+  name: string;
+  amount: number;
+}
+
+type Step = "address" | "shipping" | "review";
+
+async function postJson(url: string, body: unknown) {
+  const response = await fetch(url, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify(body),
+  });
+  return response.json();
+}
+
+export function CheckoutClient() {
+  const { cartId, items, hasHydrated } = useCartStore();
+  const [step, setStep] = useState<Step>("address");
+  const [form, setForm] = useState({ firstName: "", lastName: "", address1: "", city: "", province: "", phone: "", email: "" });
+  const [shippingOptions, setShippingOptions] = useState<ShippingOption[]>([]);
+  const [selectedOptionId, setSelectedOptionId] = useState<string | null>(null);
+  const [shippingTotal, setShippingTotal] = useState(0);
+  const [total, setTotal] = useState(0);
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  const itemsSubtotal = items.reduce((sum, item) => sum + (item.product.price ?? 0) * item.quantity, 0);
+  const currency = items[0]?.product.currency;
+
+  async function submitAddress(event: FormEvent) {
+    event.preventDefault();
+    if (!cartId) return;
+    setLoading(true);
+    setError(null);
+    try {
+      const cart = await postJson("/api/cart/address", { cartId, ...form });
+      if (cart.error) throw new Error(cart.error);
+      const response = await fetch(`/api/cart/shipping-options?cartId=${cartId}`);
+      const data = await response.json();
+      const options: ShippingOption[] = data.options ?? [];
+      setShippingOptions(options);
+      setSelectedOptionId(options[0]?.id ?? null);
+      setStep("shipping");
+    } catch (submitError) {
+      setError((submitError as Error).message);
+    } finally {
+      setLoading(false);
+    }
+  }
+
+  async function submitShipping() {
+    if (!cartId || !selectedOptionId) return;
+    setLoading(true);
+    setError(null);
+    try {
+      const cart = await postJson("/api/cart/shipping-method", { cartId, optionId: selectedOptionId });
+      if (cart.error) throw new Error(cart.error);
+      setShippingTotal(cart.shippingTotal ?? 0);
+      setTotal(cart.total ?? itemsSubtotal);
+      setStep("review");
+    } catch (submitError) {
+      setError((submitError as Error).message);
+    } finally {
+      setLoading(false);
+    }
+  }
+
+  function continueOnWhatsApp() {
+    const lines = items.map((item) => `• ${item.quantity} x ${item.product.name}`).join("\n");
+    const message = `Hola Ari Shopping 👋\nQuiero confirmar mi pedido:\n\n${lines}\n\nSubtotal: ${formatMoney(itemsSubtotal, currency)}\nEnvío: ${formatMoney(shippingTotal, currency)}\nTotal: ${formatMoney(total, currency)}\n\nNombre: ${form.firstName} ${form.lastName}\nDirección: ${form.address1}, ${form.city}${form.province ? `, ${form.province}` : ""}\nTeléfono: ${form.phone}`;
+    void navigator.clipboard?.writeText(message);
+    window.open(process.env.NEXT_PUBLIC_WHATSAPP_URL ?? "https://wa.link/rvcqqc", "_blank", "noopener,noreferrer");
+  }
+
+  if (!hasHydrated) return null;
+
+  if (items.length === 0) {
+    return (
+      <div className="mx-auto max-w-lg px-4 py-24 text-center">
+        <p className="text-lg font-bold">Tu carrito está vacío.</p>
+        <Button asChild variant="primary" className="mt-6"><Link href="/catalog">Ver catálogo</Link></Button>
+      </div>
+    );
+  }
+
+  return (
+    <div className="mx-auto grid max-w-5xl gap-10 px-4 py-10 lg:grid-cols-[1fr_.8fr] lg:py-16">
+      <div>
+        <Link href="/" className="mb-6 inline-flex items-center gap-1.5 text-sm font-bold text-slate-500 hover:text-ari-marino"><ArrowLeft className="size-4" />Seguir comprando</Link>
+        <h1 className="text-3xl font-black tracking-tight sm:text-4xl">Confirmar pedido</h1>
+
+        {step === "address" && (
+          <form onSubmit={submitAddress} className="mt-8 space-y-4">
+            <div className="grid gap-4 sm:grid-cols-2">
+              <Input placeholder="Nombre" required value={form.firstName} onChange={(event) => setForm({ ...form, firstName: event.target.value })} />
+              <Input placeholder="Apellido" required value={form.lastName} onChange={(event) => setForm({ ...form, lastName: event.target.value })} />
+            </div>
+            <Input placeholder="Dirección" required value={form.address1} onChange={(event) => setForm({ ...form, address1: event.target.value })} />
+            <div className="grid gap-4 sm:grid-cols-2">
+              <Input placeholder="Ciudad" required value={form.city} onChange={(event) => setForm({ ...form, city: event.target.value })} />
+              <Input placeholder="Departamento" value={form.province} onChange={(event) => setForm({ ...form, province: event.target.value })} />
+            </div>
+            <div className="grid gap-4 sm:grid-cols-2">
+              <Input placeholder="Teléfono" required value={form.phone} onChange={(event) => setForm({ ...form, phone: event.target.value })} />
+              <Input type="email" placeholder="Correo" required value={form.email} onChange={(event) => setForm({ ...form, email: event.target.value })} />
+            </div>
+            {error && <p className="text-sm font-bold text-rose-600">{error}</p>}
+            <Button type="submit" variant="primary" size="lg" className="w-full" disabled={loading}>{loading ? "Guardando…" : "Continuar a envío"}</Button>
+          </form>
+        )}
+
+        {step === "shipping" && (
+          <div className="mt-8 space-y-4">
+            <p className="flex items-center gap-2 text-sm font-bold text-slate-500"><MapPin className="size-4" />{form.address1}, {form.city}{form.province ? `, ${form.province}` : ""}</p>
+            <div className="space-y-3">
+              {shippingOptions.map((option) => (
+                <label key={option.id} className={`flex cursor-pointer items-center justify-between rounded-2xl border-2 p-4 transition ${selectedOptionId === option.id ? "border-ari-marino bg-ari-marino/5" : "border-slate-200"}`}>
+                  <span className="flex items-center gap-3 font-bold"><Truck className="size-5 text-ari-marino" />{option.name}</span>
+                  <span className="flex items-center gap-3">
+                    <span className="font-black">{formatMoney(option.amount, currency)}</span>
+                    <input type="radio" name="shipping" checked={selectedOptionId === option.id} onChange={() => setSelectedOptionId(option.id)} />
+                  </span>
+                </label>
+              ))}
+              {shippingOptions.length === 0 && <p className="text-sm text-slate-500">No hay opciones de envío disponibles para esta dirección.</p>}
+            </div>
+            {error && <p className="text-sm font-bold text-rose-600">{error}</p>}
+            <Button variant="primary" size="lg" className="w-full" disabled={loading || !selectedOptionId} onClick={submitShipping}>{loading ? "Guardando…" : "Continuar"}</Button>
+          </div>
+        )}
+
+        {step === "review" && (
+          <div className="mt-8 space-y-4">
+            <div className="rounded-2xl border border-slate-200 p-5">
+              <p className="text-xs font-black uppercase tracking-wide text-slate-400">Entrega</p>
+              <p className="mt-1 font-bold">{form.firstName} {form.lastName}</p>
+              <p className="text-sm text-slate-500">{form.address1}, {form.city}{form.province ? `, ${form.province}` : ""}</p>
+              <p className="text-sm text-slate-500">{form.phone}</p>
+            </div>
+            <p className="text-sm text-slate-500">El pago en línea todavía no está disponible — confirmamos tu pedido por WhatsApp con estos datos.</p>
+            <Button variant="primary" size="lg" className="w-full" onClick={continueOnWhatsApp}><MessageCircle className="size-5" />Confirmar por WhatsApp</Button>
+          </div>
+        )}
+      </div>
+
+      <div className="h-fit rounded-3xl border border-slate-200 p-6">
+        <h2 className="font-black">Tu pedido</h2>
+        <div className="mt-4 space-y-3">
+          {items.map((item) => (
+            <div key={item.lineItemId} className="flex items-center gap-3">
+              <div className="relative size-14 shrink-0 overflow-hidden rounded-xl bg-slate-100"><Image src={item.product.thumbnail} alt={item.product.name} fill sizes="56px" className="object-cover" /></div>
+              <div className="flex-1"><p className="text-sm font-bold leading-5">{item.product.name}</p><p className="text-xs text-slate-500">Cantidad: {item.quantity}</p></div>
+              <p className="text-sm font-black">{formatMoney((item.product.price ?? 0) * item.quantity, item.product.currency)}</p>
+            </div>
+          ))}
+        </div>
+        <div className="mt-5 space-y-2 border-t border-slate-100 pt-4 text-sm">
+          <div className="flex justify-between"><span className="text-slate-500">Subtotal</span><span className="font-bold">{formatMoney(itemsSubtotal, currency)}</span></div>
+          {step === "review" && <div className="flex justify-between"><span className="text-slate-500">Envío</span><span className="font-bold">{formatMoney(shippingTotal, currency)}</span></div>}
+          <div className="flex justify-between text-base"><span className="font-black">Total</span><span className="font-black">{formatMoney(step === "review" ? total : itemsSubtotal, currency)}</span></div>
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/workloads/ecommerce/lib/headless/providers/medusa-cart.ts b/workloads/ecommerce/lib/headless/providers/medusa-cart.ts
index 693420a..46bbc42 100644
--- a/workloads/ecommerce/lib/headless/providers/medusa-cart.ts
+++ b/workloads/ecommerce/lib/headless/providers/medusa-cart.ts
@@ -33,9 +33,27 @@ export interface CartSummary {
   cartId: string;
   currency: string;
   subtotal: number;
+  shippingTotal: number;
+  total: number;
   items: CartLine[];
 }
 
+export interface ShippingAddressInput {
+  firstName: string;
+  lastName: string;
+  address1: string;
+  city: string;
+  province?: string;
+  phone: string;
+  email: string;
+}
+
+export interface ShippingOption {
+  id: string;
+  name: string;
+  amount: number;
+}
+
 function backendUrl(): string {
   const value = process.env.MEDUSA_BACKEND_URL;
   if (!value) {
@@ -68,6 +86,8 @@ type MedusaCart = {
   id: string;
   currency_code: string;
   subtotal?: number | null;
+  shipping_total?: number | null;
+  total?: number | null;
   items?: MedusaLineItem[] | null;
 };
 
@@ -76,6 +96,8 @@ function mapCart(cart: MedusaCart): CartSummary {
     cartId: cart.id,
     currency: cart.currency_code,
     subtotal: cart.subtotal ?? 0,
+    shippingTotal: cart.shipping_total ?? 0,
+    total: cart.total ?? cart.subtotal ?? 0,
     items: (cart.items ?? []).map((item) => ({
       lineItemId: item.id,
       variantId: item.variant_id,
@@ -171,3 +193,50 @@ export async function removeLineItem(cartId: string, lineItemId: string): Promis
   // "parent", no en "cart" -- verificado en vivo, no documentado.
   return mapCart(data.parent as MedusaCart);
 }
+
+export async function setShippingAddress(
+  cartId: string,
+  address: ShippingAddressInput,
+): Promise<CartSummary> {
+  const data = await medusaCartFetch(`/store/carts/${cartId}?${ITEMS_FIELDS}`, {
+    method: "POST",
+    body: {
+      email: address.email,
+      shipping_address: {
+        first_name: address.firstName,
+        last_name: address.lastName,
+        address_1: address.address1,
+        city: address.city,
+        province: address.province || undefined,
+        country_code: "co",
+        phone: address.phone,
+      },
+    },
+  });
+  return mapCart(data.cart as MedusaCart);
+}
+
+type MedusaShippingOption = {
+  id: string;
+  name: string;
+  amount?: number | null;
+  calculated_price?: { calculated_amount?: number | null } | null;
+};
+
+export async function getShippingOptions(cartId: string): Promise<ShippingOption[]> {
+  const data = await medusaCartFetch(`/store/shipping-options?cart_id=${cartId}`);
+  const options = (data.shipping_options as MedusaShippingOption[] | undefined) ?? [];
+  return options.map((option) => ({
+    id: option.id,
+    name: option.name,
+    amount: option.calculated_price?.calculated_amount ?? option.amount ?? 0,
+  }));
+}
+
+export async function addShippingMethod(cartId: string, optionId: string): Promise<CartSummary> {
+  const data = await medusaCartFetch(`/store/carts/${cartId}/shipping-methods?${ITEMS_FIELDS}`, {
+    method: "POST",
+    body: { option_id: optionId },
+  });
+  return mapCart(data.cart as MedusaCart);
+}