Hybrid Installations: Transitioning from EWS to Microsoft Graph
In many hybrid environments, it's common to include both Domino and Exchange users in the OnTime for Domino solution. Until now, OnTime has relied on the Exchange Web Services (EWS) API to support both Microsoft 365 and on-premises Exchange environments.
As Microsoft has announced the deprecation of EWS for Microsoft 365, we have re-engineered our Microsoft integration to fully support the Microsoft Graph API for M365 cloud environments. While the EWS-based integration remains available, we strongly recommend migrating to the Graph-based setup for enhanced capabilities and long-term compatibility.
The switch between EWS and Graph is handled through the configuration database. Although some setup is required, both options use the same codebase. Detailed guidance is available in the OnTime manual.
Microsoft Graph is now the preferred integration. It offers a modern REST-based architecture, improved security, and a more granular permissions model compared to EWS.
Scalable and Resilient Hybrid Topology with OnTime 11.7.x
At the recent ENGAGE conference, we hosted a session titled “Unlocking the Full Potential of OnTime: The Admin's Deep Dive Masterclass.”
This session highlighted advanced features and deployment topologies available in OnTime 11.7.x. We encourage you to watch the recording, as it covers several powerful features that are often underutilized.
If you're specifically interested in the hybrid setup, you can jump to the relevant section starting at the 21-minute mark of the presentation.
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