Compared to single-image ads, Carousel Ads drive 20-30% lower cost per click. Their format inspires ad creativity and user engagement. Use carousel to show the breadth of your product offering in one ad. Themed carousels are ads with a shared theme, often with each carousel image in sequential order.
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A themed carousel ad is a great way of communicating a broad narrative within a single ad unit. Not only does this provide multiple opportunities to demonstrate relevance, but it also allows for greater scope for creativity which can result in improved CTR.