Exchange Online

Exchange Server cumulative updates released Apr. 2022 include Windows Server 2022 support and hybrid management improvements for Exchange Server 2019.

Exchange Online is adopting two protocols designed to help secure mail in transit against eavesdropping and forgery.

Developers must choose between APIs for Exchange Server and Exchange Online based on mailbox hosting, features, and long-term prospects.

Applications using Exchange Web Services (EWS) with Exchange Online face breaking changes and a lockout of new applications by Sept. 2022.

Exchange Online customers should check for devices and software that depend on Basic Authentication, which Microsoft plans to shut down starting Oct. 1, 2022.

The classic Exchange admin center console for Exchange Online will be permanently replaced by a new one in stages beginning Oct. 2021.

Exchange Online ends support for Active Directory Rights Management Services (AD RMS) on Feb. 28, 2021.

Chart illustrates collaboration services that are part of Microsoft 365, and where they are most effective.

Microsoft 365 collaboration services vary in scope and suitability to task.