Quesetion: What features are included in Device-Only subscription
This website contains the information: Purchase device licenses in Microsoft Intune - Intune | Microsoft Docs Limitations When a device is enrolled by using a device license, the following Intune functions aren't supported: Intune app protection policies Conditional access User-based management features, such as email and calendaring. Other than the mentioned limitations, all intune funtionality is included.
