Glossary | A | Apple App Tracking Transparency (ATT)
What is ATT?
Apple App Tracking Transparency (ATT) is a feature of iOS that requires applications to ask permission if they want to track your activity across other companies’ apps and websites via Identifier for Advertisers (IDFA).
By associating this identifier with other information, app developers have been able to build incredibly detailed records of how the user use his device including in other apps and across the web. After installing iOS 14.5, all apps are required by Apple to use the new App Tracking Transparency framework to ask for tracking permission. This only applies to tracking your activity outside of the company’s own apps.