Setup audit trail is a tool that allows administrators to review recent configuration changes made in their org. It shows a list of up to 180 days of setup changes made by anyone in the org, including the date, time, user, and type of change. It can help administrators track who made what changes and when, and troubleshoot any issues caused by configuration changes. Critical updates are notifications that inform administrators of new features or enhancements that may impact their org; they do not show configuration changesmade by users. Debug logs are records of database operations, system processes, and errors that occur when executing a transaction or running unit tests; they do not show configuration changes made by users either. Field history tracking is a feature thatallows administrators to track changes to the values of certain fields on records; it does not show configuration changes made in setup. References:https://help.sale sforce.com/s/articleView?id=sf.monitorsetup.htm&type=5