Using XM Scaled packages to run Sitecore without the xDB
The XM Scaled packages include the Content Management, Content Delivery, and Sitecore Identity roles. In Sitecore 9.1 and later, the XM Scaled packages do not include Sitecore XP binaries and configuration files. This means that:
The packages are optimized for Experience Manager.
Only a limited set of Sitecore XP features are supported.
You must re-deploy the Content Delivery and Content Management roles using the XP Scaled packages if you want to use the xDB or run the Experience Manager with in-session personalization.
Compatible Sitecore XP features and applications
The XM Scaled packages in Sitecore 9.1 and later support fewer Sitecore XP features and applications due to the absence of Sitecore XP binaries and configuration files. If you want to use XM with in-session personalization, you must use the XP Scaled packages to deploy the Content Delivery and Content Management roles.