AppTrackingTransparency (ATT) framework is Apple’s new IDFA opt-in mechanism introduced with iOS 14.5. Essentially, it requires apps to ask for a user’s consent before sharing tracking or advertising related data with third parties. 

As a result, Apple’s unique identifier for advertisers (IDFA) will be unavailable unless a user actively opts-in. 

What will AppTrackingTransparency (ATT) change? 

Publishers and advertisers will need to change their approach in a number of ways to maintain their edge on iOS 14: 

More key iOS 14 terms: 

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