You work for a sports apparel company that sponsors marathons in three different cities and wants to deliver city-specific ads. You need to make sure your ad creative for each city is viewed in the correct location. What Display & Video 360 ad format should you use?

To deliver city-specific ads for marathons in three different locations, you should use Data-driven ads because they enable Dynamic Creative Optimization (DCO), allowing you to serve tailored creative variations to users based on real-time signals like geographic location. Unlike standard native or responsive ads, which typically show the same assets to all targeted users, data-driven creatives use a set of rules and a dynamic feed to swap out headlines, images, or call-to-action buttons (e.g., "Good luck in the Boston Marathon" vs. "Good luck in the Chicago Marathon") automatically. This ensures that the sports apparel company provides a highly relevant, localized experience to each runner or spectator without the need to manually create and manage separate line items for every individual city.