IDFA 사용 여부가 옵트인으로 바뀝니다.
그런데 업계 전반적으로 보면 그렇게 어마어마한 효과는 없을 것 같아요.

1. https://developer.apple.com/app-store/user-privacy-and-data-use/
2. https://www.youtube.com/watch?v=C2WPJei4Bvc&feature=youtu.be
3. https://www.notion.so/iOS-Part-2-of-4-94aa43f5a7954a4e99260c93af378e1d
4. https://adtechexplained.com/idfv-explained/
5. https://mobiledevmemo.com/fingerprinting-with-att-reality-or-delusion/
6. https://www.singular.net/blog/ios14-idfa-limit-ad-tracking-skadnetwork-wwdc-privacy-update
7. https://www.kochava.com/kochava-support-for-skadnetwork/
8. https://support.appsflyer.com/hc/en-us/articles/360011420698-SKAdNetwork-Solution-guide
9. https://incipiagabe.medium.com/a-case-study-in-apple-search-ads-lat-on-7cf3c4341d8b