Implement tracking for Facebook ads
Information on implementing third party tracking can be found in Facebook's ads help center.
How impressions and clicks are counted for Facebook ads
Facebook products share impression data with Google, server-to-server, when an ad is displayed onscreen or the creative asset is rendered to the user.
Facebook products notify Google of chargeable click events from the client where possible (depending on the destination). These click events are recorded when the user clicks the ad to a landing page. They may be recorded differently depending if the destination is on or off a Facebook property.
The measurement source for Facebook ads is "provided". Learn more