The document discusses the carousel ad format for Facebook, highlighting its effectiveness in promoting businesses by showcasing up to 10 clickable images in a single ad unit. It notes significant performance improvements, including a 30-50% decrease in cost per acquisition (CPA) and a 20-30% decrease in cost per click (CPC) when compared to standard link ads. Best practices for using carousel ads include identifying campaign goals, optimizing image order, and leveraging insights from ad performance reports.