Google Analytics 4 has updated its explorations feature and data retention settings. Regarding data retention, if a GA4 property becomes large, event-level data retention will automatically reduce to two months when exceeding 25 billion (for standard) or 250 billion (for 360) billable events in the last 31 days. The updates were announced on the Google Analytics Help Center. Data retention update. Read Google’s Explorations guide or Data Retention documentation for more information.