Step 5: Place the customer's pizza order
While the server is looking up the address, the customer types in his pizza order.
With an order and delivery address, the customer can click "Order Pizza".
Ajax? No, I have no idea what that is. But if it's what got my pizza here so fast, I'm all for it.
The customer now gets his order fast, because Alex knew the right address to deliver the pizza to.
Customer's OrderThe server generates a delivery order for Alex, and gets the pizza cooking.