One of the reasons Facebook is able to retarget consumers with ads is that it knows how they behave on the platform.

It tracks data like:

* If a user likes to watch videos or not.
* How long a user watches a video before scrolling on.
* If a user clicks through to make a purchase but abandons the shopping cart before buying.
* If a user swipes through photos in a carousel ad.

To use Facebook advertising, this kind of behavioral data allows Facebook to optimize your ads to be delivered

Leonine Digital