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SKAdNetwork (StoreKit Ad Network) is Apple’s system for measuring ad performance on iOS in a privacy-preserving way—introduced as part of the shift away from user-level tracking after App Tracking Transparency. It’s basically Apple’s answer to: “How do advertisers know an ad worked without tracking the person who saw it?” 1) The core idea Instead of telling advertisers: “User X saw ad Y and installed app Z” SKAdNetwork only tells them: “An install happened, attributed to ad campaign Y” …but: • no personal identity • no device ID (like IDFA) • no cross-app tracking data So it’s aggregated, delayed, and anonymised attribution. 2) How it works (step-by-step) Step 1: Ad impression / click A user sees or clicks an ad inside an app on iOS. The ad network registers: • campaign ID • ad network ID • basic metadata But not the user identity. Step 2: App install happens If the user installs the advertised app within a time window, iOS records: “This install is associated with campaign X” But agai...

Apple’s privacy changes—especially App Tracking Transparency (ATT)—didn’t stop tracking so much as break one of the main pipes used to connect identity across apps.  That forced ad networks (including Meta and others) to rebuild their systems around weaker, more indirect signals. Here’s what actually changed. 1) What ATT actually did App Tracking Transparency requires apps on iOS to ask: “Allow this app to track your activity across other companies’ apps and websites?” If the user says no, the app cannot access the IDFA (Identifier for Advertisers). That matters because IDFA used to be: • a stable device-level advertising ID • shared across apps • resettable but persistent enough for long-term tracking So ATT effectively: • cut off the easiest cross-app identity connector on iPhones 2) What got broken (significant disruption) A) Cross-app tracking collapsed Before ATT: • App A knows you installed App B • Both apps can share the same advertising ID • Ad networks stitch behaviour to...