In Exchange Hosted Archive (EHA) Supervisory Review is made up of a set of features that support a workflow for reviewing messages. This includes supervisor-subordinate relationship configuration; random Sampling and Keyword harvesting of messages; a native Review folder in the Archive Viewer; and a report called the Supervisory Review Evidentiary report.  

The advanced archiving features of Office 365 does not natively support Supervisory Review. However using the features of Office 365 Groups to define supervisor-subordinate relationships, Search Folders to store and process harvested messages; Annotations to mark messages of concern; and PowerShell to harvest and report on this activity, Office 365 can support the supervisor review process.