Facebook ads are paid placements that businesses use to promote their products or services to a targeted audience on Facebook. These ads can appear in various formats like images, videos, or carousels, and users see them throughout the app, including their feeds and stories.The key to Facebook ads is targeting. Businesses can define who sees their ads based on demographics, interests, and even online behavior. This allows them to reach a highly relevant audience more likely to be interested in what they have to offer.