What's Coming in CU15

While details are still emerging, CU15 is shaping up to be more than just another cumulative update. Here’s why it matters:

• Code Parity with Exchange SE – Microsoft is working to align CU15’s codebase with Exchange SE, making future upgrades more seamless.
• Feature Updates – Expect enhancements that improve stability, security, and potentially new functionality to bridge the gap between on-prem and cloud-based Exchange solutions.
• Security & Compliance Readiness – Keeping up with Exchange updates ensures that your email infrastructure remains secure and compliant with the latest security standards.

Why You Should Be on the Latest Exchange 2019 Version

If you're still running an older version of Exchange, now is the time to upgrade to the latest CU. Microsoft has made it clear that being on an up-to-date Exchange 2019 environment will make the transition to CU15 and eventually to Exchange SE much easier.

Waiting too long to update could leave you in a difficult spot—especially if older CU versions don't support a direct path to Exchange SE when it launches.

What Should You Do Now?

1. Check Your Current Exchange Version – Ensure you're on the latest CU of Exchange 2019 to prepare for CU15.
2. Plan for CU15 Deployment – Once CU15 is released, apply it as soon as possible to benefit from its improvements.
3. Stay Engaged with Microsoft Updates – Keep an eye on Exchange Team blogs and announcements for new details on CU15 and Exchange SE.

Final Thoughts

Microsoft is actively developing the future of Exchange Server, and CU15 is a critical step in that journey. If you're running Exchange on-prem, staying up to date ensures better security, improved performance, and an easier transition to the next generation of Exchange.

For the latest details, check out Microsoft’s official blog on the topic:
When is Exchange 2019 CU15 Coming?

Are you prepared for the next Exchange update? We’re here to help with your migration strategy!