Cohort-based Segment

A cohort-based segment is a user group whose membership comes from an already defined cohort and is then reused as a filter in other reports.

The benefit is keeping the definition in one place: the group is built once from an entry date or a specific behaviour, then reused in funnel, path and trend reports without rewriting the conditions each time. The important difference from a plain filter is that membership rests on user history rather than a current attribute. It breaks down when such a segment is applied to a date range different from the one the cohort was built for, because behaviour is then measured for people who had not yet entered the product for part of that range.