Facebook Warns Publishers iOS 14 Fallout Could Impact Audience Network by 50%

The impending rollout of Apple’s iOS 14 will bring big changes to Facebook, most notably the end of collecting iPhone identifiers (IDFA), and the social network is warning advertisers to expect weaker ad performance as a result. By pausing IDFA collection, Facebook will effectively halt serving personalized in-app ads to iPhone users once they upgrade…
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