Sunday, February 27, 2022

The rollout of ATT in iOS 14.5 has changed how the mobile ad industry approaches monetization and measurement

AppTrackingTransparency (ATT) affected the vast majority of iOS users. As of December 2021, 89% of US iOS users were on version 14.5 or later, per AppsFlyer. Of those that have seen the ATT prompt, 37% opted in, according to the company. That's higher than initial industry expectations but still a massive decrease in trackable users.

That number may also be a bit misleading. Both publishers and advertisers need to get consent, so users who only accede to one request may still be untrackable. Plus, the opt-in rate doesn't account for users that turned on Apple's previous opt-out tool, Limit Ad Tracking (LAT), and aren't served the ATT prompt at all. AppsFlyer estimates around 30% of global iOS devices had LAT turned on.

Platforms that rely heavily on third-party data feel it the most. That includes Big Tech companies with large off-platform ad businesses, such as the Meta Audience Network or Snap Audience Network. Meta CFO Dave Wehner said in the company's Q4 2021 earnings that ATT could cost the company $10 billion in ad revenues in 2022. Meanwhile, platforms that rely mostly on...

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