Which feature allows users to enroll multiple devices at once?

The feature that enables users to enroll multiple devices at once is bulk user import via CSV. This functionality is particularly useful for organizations that need to onboard several devices simultaneously, as it allows administrators to prepare a CSV file containing multiple user details and the associated devices.

When this CSV file is imported into Microsoft Intune, Intune processes the information and facilitates enrollment for all the specified devices at once. This effective method streamlines the enrollment process, significantly reducing the administrative overhead that would come from enrolling each device individually.

Active Directory synchronization, while important for identity management and ensuring user devices are recognized in the Intune ecosystem, does not directly relate to bulk enrollment of devices. Individual user registration only allows one device to be enrolled at a time, which does not meet the requirement for mass enrollment. Directory Access Management is more focused on controlling access to directories rather than facilitating device enrollment. Thus, the bulk user import via CSV is the optimal solution for enrolling multiple devices efficiently.