The latest news about data. Data is used in advertising in a variety of ways, including Audience targeting, Ad personalization, Ad optimization, Ad placement, and Measurement. Advertisers use data in advertising to reduce wasted ad spend.
Google says advertisers will receive a string of zeros in place of the identifier, when a user opts out of interest-based advertising or ads personalization.
Apple last month released App Tracking Transparency (ATT) in iOS 14.5 update. This enables users to control which apps are allowed to track the activity across other companies' apps and websites.