A new Lightning component can be added to record pages in Field History Explorer. This component shows the audit trail of tracked field changes, who changed what and when, without leaving the record.
Where: This change applies to Lightning Experience in Enterprise, Performance, Unlimited, and Developer editions.
Who: This change is available to users with the Field Audit Trail or Salesforce Shield license.
How: On a specific record page, click Menu, then click Edit Page, and drag FieldHistoryExplorer to a location from the Standard section.