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Using the Topics API (Chrome Only, Opposed by Firefox/Safari)
This page explains how the Topics API works and how it can be used to create an interest-based advertising (IBA) solution.
Chrome places each of the 22 root topics (those without an ancestor) from the taxonomy into one of two buckets indicating higher or standard utility for the overall ad tech ecosystem. The assignment of root topics to buckets is based on input about utility Google received from companies across the ecosystem. You can also test your Topics API code locally without enrollment by enabling the following Chrome developer flag:
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