Google proposes yet another interest-based ad system
Google has given up on Federated Learning of Cohorts (FLoC), a categorization system for serving interest-based ads, and replaced it with Topics, a categorization system for serving interest-based ads.
Topics breaks down your web history into hostnames, which are analyzed by a machine-learning algorithm to determine the general topics you’re interested in. This all happens locally within your browser. Then websites aware of this tech can make an Google Topics API call to your browser to fetch an array of up to three topics derived from your visited sites that can then be used to present targeted ads.
Source: Google proposes yet another interest-based ad system • The Register
