Simple definition
A Microsoft Entra joined device uses cloud identity for device sign-in and management without traditional on-premises domain join.
Purpose and use
An Entra-joined device has an identity relationship with the cloud directory supporting associated sign-in and access scenarios.
How does it work?
This differs from simple device registration and traditional membership in an on-premises Active Directory domain.
Example and verification
Before endpoint migration, verify actual join type, sign-in account and dependencies for on-premises resource access.
Points to watch
Entra join does not automatically mean Intune management or compliant status. These states and prerequisites require separate checks.
In short
Join describes a device-identity relationship; management, compliance and permissions complete the access scenario.