...
The Activity Log enables Org admins to track changes to user accounts and assets within their organization.
To access the Activity Log, click Manager > Activity Log.
By default, the Activity Log shows a log of all the latest tasks executed within the Org. However, the page also enables Org admins to query the log for data gathered over a specific time range. The log can be filtered You can filter the log to display changes in ACLs (Access Control Lists), Assets (such as Pipelines, Accounts, and Tasks), Users, API Policies, Snap Pack Distributions, Snaplexes, Sessions, and Groups) . Each Asset listed in the report is clickable, leading to a drill-down log of all activities associated with the concerned by clicking on the tab for that asset. You can also save a log by clicking the Download button on the top-right of the activity log.
Audit information is retained for 90 days before it is deleted. When a Project is deleted, a regular users lose visibility to all events for that project in their Activity Log. However, Org admins continue to see that information.
...