Exchange Online Roadmap

Exchange Online provides e-mail, calendar, and task management to Microsoft 365 users through Outlook desktop, mobile, and Web applications.  It also provides several supporting services for Teams, including calendar management, task storage, and legal hold and retention.  It is a mature service that will not change radically, but it will see security and management improvements, and new usage and capacity charges. End user features will continue to arrive, especially in functions required by Teams.

Product: Exchange Online

Licensing: Exchange Server

Near Term

Exchange Online is a mature service that receives relatively few changes. Changes in 2025-2026 improve security, management, and control over capacity usage. Some of the changes could be disruptive, and some could raise costs even as they unblock migrations to Exchange Online (fig. 1).

Services Shut Down for Security

Several older technologies will be shut down in Exchange Online to reduce opportunity for attackers. The removals could also disrupt e-mail systems of some Exchange Online customers if they do not move quickly enough.