Trackers are join engines, not magic. Here is the honest threshold for when a spreadsheet and sub-IDs are enough, the five signs you've outgrown them, and what native networks specifically demand from your tracking setup.
An attribution window is the set time period after an ad click or view during which a conversion is credited back to that ad.
A postback URL is a server-to-server callback that reports a conversion back to the ad network or tracker without using a browser pixel.
Conversion tracking records when an ad click leads to a sale, lead, or signup, and ties that result back to the ad that drove it.
A conversion pixel is a tracking snippet placed on a goal page that fires when a user completes a valued action, attributing it back to the ad that drove it.
