Automatic traffic insights
Insights automatically detects notable changes in your traffic, such as a source sending more visitors or a page losing views, against your site's own history.
Insights looks for notable changes this week compared with the usual pattern: a source that suddenly sends more visitors, a page whose traffic dropped, a goal whose conversion rate moved, a country or campaign that appeared. Each insight links to the dashboard view that shows it.
Insights compare against a baseline built from your own history, so they get better as a site collects more data. Use alerts with the anomaly rule to be notified about changes like these as they happen.