Apple builds management into iOS, iPadOS and macOS. A device enrolled in an MDM (mobile device management) server accepts settings, apps and commands from it. The server never connects to the device directly: it asks Apple Push Notification service (APNs) to wake the device, and the device then checks in over an encrypted connection to collect its instructions. Newer declarative device management lets devices apply settings on their own and report their status back as it changes.
What IT can do depends on how a device was enrolled. Devices bought by the organisation and registered in Apple Business or Apple School Manager use Automated Device Enrollment and are supervised, which unlocks the full set of restrictions and, on iPhone and iPad, Single App Mode and Lost Mode. Personal devices use User Enrollment, where only work accounts, apps and data are managed.
We build custom MDM servers and consoles, connect existing MDM tools to the rest of your systems, and plan, roll out and support fleets of company devices.