It limits the use of a unique device id that can be shared with third parties. AFAIK it doesn’t limit anything for Apple’s 1st party apps that include advertising, like Maps.
Notably Apple is spinning up a demand side platform (DSP) where advertisers can spend money directly on Apple platforms to place ads. That almost certainly means that platform will have full access to relevant user data for their ads customers.
Apple IDFA
It limits the use of a unique device id that can be shared with third parties. AFAIK it doesn’t limit anything for Apple’s 1st party apps that include advertising, like Maps.
Notably Apple is spinning up a demand side platform (DSP) where advertisers can spend money directly on Apple platforms to place ads. That almost certainly means that platform will have full access to relevant user data for their ads customers.