Conversion events tracked by the pixel, app SDK, or API that are outside of standard events. These tend to be created to fit the publisher’s needs when a pre-defined standard event will not.
Custom Metric
Advertisers can create custom metrics that combine existing metrics with a mathematical formula. That formula can be based on Meta’s current ads metrics, standard events, custom events, and custom conversions.
Customer List Custom Audience
A customer list custom audience is created by uploading a customer list that Facebook matches with users so you can target them with ads.
Daily Spending Limit
A Daily Spending Limit is a daily cap imposed by Meta on your spend that can apply across your entire business account, ad account, campaign, page, or app.
Daily Unique Reach
Daily Unique Reach Facebook ads optimization allows you to limit the number of times you reach your audience to no more than once per day.