By @RabiaNoureen11
Publication Date: 2025-11-20 17:58:00
Key Takeaways:
- Microsoft plans to retire Exchange Web Services (EWS) in October 2026.
- The new REST-based Admin API supports key Exchange tasks like mailbox delegation.
- Public preview is available for testing, planning migrations, and providing feedback.
Microsoft has launched a REST-based “Admin API” in public preview this week. It’s designed to help organizations move away from Exchange Web Services (EWS), which will be deprecated next year.
Microsoft plans to retire Exchange Web Services (EWS) from Exchange Online in October 2026. However, many organizations rely on EWS for certain administrative tasks. To address this gap, Microsoft introduced the Exchange Online Admin API for commercial customers.
What are the key features of the REST-based Admin API?
The Exchange Online Admin API introduces a REST-based interface that feels familiar to administrators used to PowerShell cmdlets but…