The activity log records what has happened on a site: who did what, and when. It is the first place to look when you want to understand a recent change.
Open the activity log
Open your site, then under Hosting select Activity.
What it shows
Each entry shows the time, the user who performed the action, a group such as Staging, SFTP, or Backups, and a description of what happened. The most recent events are listed first.
Filtering the log
Use the group filter at the top of the page to narrow the log to one type of activity, for example only backup events or only domain changes.
