Microsoft Launches Exchange Server Subscription Edition
Microsoft has unveiled the Exchange Server Subscription Edition (SE), a pivotal development for both on-premises and hybrid deployments. This launch signifies a transition to the Modern Lifecycle Policy, introducing continuous servicing without a predetermined end-of-life. Administrators are now tasked primarily with ensuring their configurations remain current.
A New Era for Exchange
This transition marks a fundamental departure from the traditional fixed-version releases, aligning Exchange more closely with contemporary continuous update models that are increasingly favored across various software landscapes. While administrators can expect less frequent major upgrades, the new lifecycle strategy promises a steady flow of smaller, incremental updates.
Cloud Options Remain Robust
For organizations seeking a cloud-based solution, Exchange Online and Microsoft 365 will persist in delivering cutting-edge features, including integration with Microsoft 365 Copilot. With the release of Exchange SE, Microsoft addresses the needs of customers requiring an on-premises environment.
Getting Started with Exchange SE
Those interested in the Exchange SE Release to Manufacturing (RTM) build can proceed to install it as a Cumulative Update (CU) for Exchange Server 2019 CU14 or CU15. Microsoft advises users running Exchange 2019 to undertake an in-place upgrade from either CU14 or CU15 to Exchange SE. Notably, this RTM release does not introduce any significant code upgrades or major modifications compared to Exchange 2019 CU15, which suggests a low-risk upgrade path.
What’s New in Exchange SE?
The Exchange SE RTM closely mirrors Exchange 2019 CU15, with no addition of new features or schema changes, nor the need for new license keys. The primary distinctions include an updated license agreement, a revised name, and changes in build and version numbers, complemented by integrated updates since CU15.
The Urgency to Upgrade
For those questioning the rationale behind upgrading to a version with no apparent new offerings, the critical factor to consider is that after October 2025, Exchange SE will stand as the sole supported on-premises version of Exchange. This signifies the end of support for both Exchange 2016 and 2019.
Future Developments and Enhancements
Microsoft has announced that Exchange SE CU2 will prevent coexistence with Exchange 2016 and 2019 servers and will necessitate specific Exchange SE server keys along with new features. The company aims to issue new Cumulative Updates bi-annually, with an overarching goal to continuously simplify, streamline, and enhance Exchange SE over time.
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