Content freshness refers to how recently content has been published or updated, and its relevance as a ranking signal for time-sensitive queries. Google’s Query Deserves Freshness (QDF) algorithm boosts recently updated content for trending topics, current events, and fast-evolving subjects. For evergreen topics, regular updates — adding new statistics, refreshing examples, expanding sections — signal to search engines that content remains accurate and current. A content audit process helps identify stale pages that would benefit from freshening.