Which is not a type of Facebook ad?

Billboard ads are not a recognized type of Facebook ad format. Facebook provides various advertising options designed to optimize user engagement and drive conversions, including video ads, image ads, and carousel ads.

Video ads allow brands to showcase their products or services through engaging video content, appealing to users in a dynamic way. Image ads utilize single images to convey messages and promotions effectively, while carousel ads permit advertisers to display multiple images or videos within a single ad, giving users the ability to scroll through different creative assets.

The term "billboard ad" typically refers to traditional outdoor advertising, which does not apply within the digital landscape of Facebook's advertising features. Therefore, billboard ads are distinct from and not part of the suite of options Facebook provides to marketers.