The Audit Log feature in the platform provides tracking of changes made by users and applications, creating an audit trail. The history of changes can be searched through using the Get History API.
Each audit history entry will contain metadata such as timestamp, the user or service that made the change, the nature of the modification and what type of object was modified. In addition to the metadata, when an audit entry is created a full "snapshot" of the object is stored that represents its state at the time of change. Using the ID of the audit history entry, the snapshot can be downloaded using the Download History API.