Joomla 3.9.27 Blocks FLoC by Default
https://developer.joomla.orgFederated Learning of Cohorts (FLoC) proposes a new way for businesses to reach people with relevant content and ads. In short it allows interest-based advertising on the web. Instead of the current cookie based tracking, you’ll be associated with a “cohort,” a group of users sufficiently large enough to make you at least semi-anonymous to the companies targeting you.
Joomla! along with other content management systems and web frameworks are planning to block FLoC and this comes into effect with Joomla! 3.9.27
You can find the setting in Global configuration on the Site tab in the Site Settings area. Block FLoC Yes/No and the default setting will be Yes.