The setting will allow you to customize ads for each user individually.
Facebook is rolling out a new option in its automated ad setup process called Optimize Text For Each User. When activated, the setting will automatically select the title and description text for each user.
The Facebook system determines which words a user best responds to. Most likely Facebook uses several algorithms in order to predict the appropriate option, but its main task is to remember the user’s reactions in the past to achieve the best result.
This method is reminiscent of the ability to choose from several variations of the text that Facebook added back in 2019. But this version has become even easier to use, and the developers promise to increase efficiency for SEO.
Some users have already discovered the new Optimize Text Per Person setting, but Facebook has yet to report on the full launch.