Apple’s iOS 14.5 privacy changes, which force apps to get explicit consent to track user behavior, tore through the ad tech ecosystem like a tornado. The privacy policy Apple calls App Tracking Transparency (ATT), coupled with the expansion of data privacy laws and Google’s upcoming elimination of third-party cookies (though not until 2023) has forced advertisers used to one-to-one targeting to reassess their data practices. It’s even caused many to wonder whether adtech – and the many businesses dependent on one-to-one targeting using cookies or mobile advertising IDs for user acquisition and engagement – will crumble in an era focused on consumer consent.