Apples App Tracking Transparency changed a lot. Whats IDFA, what’s IDVF? Learn more in this post at medium.com:
Starting with the launch of iOS 14.5, apps have to request authorization from the user in order to access the Identifier For Advertiser (IDFA) of the device (opt-in). Until now, access to IDFA was allowed by default (opt-out). This has a big impact on the app ad and attribution industry.
Learn more in my blog post on the inovex website: