What is IDFA and why is this iOS update important?

Opting out means that IDFA won't be available for a specific app Only if the user changes their mind and turns on tracking for this app

Apps don't have cookies; adding IDFA means that a user of an app could be identified in IOS browsers and vice versa IDFA also solved

idfa meaning IDFA is a unique identifier for mobile devices and is used to target and measure the effectiveness of advertising

6162 meaning Beginning with its iOS software update, Apple will allow its users to choose whether to allow apps to track their IDFA Google calls their Google