Caren is planning an ad campaign aimed at retaining her brand's existing customers. Which solution would she use to drive loyalty through Subscribe & Save messaging?

Display ads are the most effective solution for Caren to drive loyalty through Subscribe & Save messaging because they can be targeted to existing customers and placed on relevant third-party websites and apps, as well as on Amazon. This broad reach allows for consistent brand messaging and reminders about the benefits of Subscribe & Save, encouraging repeat purchases and customer retention. Sponsored Products primarily focus on product discovery and sales to new customers searching on Amazon. Video ads are excellent for brand storytelling but might not be the most direct way to promote Subscribe & Save to existing customers. Sponsored Brands are good for brand awareness and showcasing a portfolio of products, but less targeted for specific loyalty programs like Subscribe & Save.