The UK Competition and Markets Authority (CMA) still has privacy and competition concerns about Google's Privacy Sandbox advertising toolkit, which explains why the ad giant recently again delayed its plan to drop third-party cookies in Chrome until 2025.
Ad industry rivals worry that Google's reimagined tech stack will put them at a competitive disadvantage by denying them the data they use to make their ads more effective.
The Topics API allows ads to be targeted at users of Chrome, Edge (soon), and Android devices based on interests conveyed through online interactions.
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