Since Google first announced Topics API, their new solution to help the advertising industry cope with the loss of third-party cookies, it has been met with mixed reviews. On GitHub, Google even admits that “the mapping of sites to topics will not always be accurate” and the “training data is imperfect” since it’s created by…

(SOURCE) https://www.adweek.com/performance-marketing/google-topics-will-require-supplemental-signals-to-succeed/