Apple's New Privacy Initiative in iOS 27: How It Differs from ATT

Why is the reaction different now?

Apple's current privacy move, implemented in iOS 27, arrives under changed circumstances. Unlike April 2021, when ATT came as a sudden systemic shock to the industry, the market has already been through one cycle of adaptation to Apple's policy.

The 2021 experience showed: tracking restrictions in the iOS ecosystem restructure effectiveness measurement chains, redistribute advertising budgets, and shift the balance of power between platforms. That is precisely why Apple's new initiative provokes not panic but a more pragmatic reaction from the market — the industry has learned to read Cupertino's signals.

What does this mean for the advertising market?

Key takeaways for a B2B audience:

• ATT (April 2021, iOS 14.5) remains the reference point: any new Apple privacy step will be compared to it.
• The volume of industry content and discussions around ATT demonstrated the depth of platform decisions' impact on advertising business models.
• The market's reaction to the changes in iOS 27 is qualitatively different from four years ago: elements of shock have given way to a well-rehearsed adaptation scenario.

AdExchanger promises a follow-up analysis of the details of Apple's new policy in the context of the lessons the industry learned after 2021. Marketers working with the iOS audience are advised to follow further publications: the ATT precedent showed that Apple's decisions change the economics of mobile advertising faster than most advertisers' internal processes can keep up with.