Exchange public folders are widely used in on-premises Exchange environments. However, Microsoft® Exchange Online does not support customer usage scenarios of public folders. If you or your customers are using Exchange public folders, there are special considerations for migrating to Microsoft Office 365. This document outlines these considerations, discusses the most common public folder scenarios and how they are represented in Office 365 services. It also provides the information you need to decide whether Office 365 is a good match for you based on your current public folder usage.