Final answer:
The Company Portal is used by end users to manage their own account and enroll devices in Microsoft Intune. Other portals serve different administrative, management, or security purposes.
Step-by-step explanation:
The portal that end users utilize to manage their own account and enroll devices in Intune is the Company Portal. The Company Portal is designed as a user-friendly interface that allows end users to access applications, view and manage their enrolled devices, and request or install software assigned to them by their company's IT department. It is a key component for organizations managing devices using Microsoft Intune, which is part of the Microsoft Endpoint Manager.
Options like the Intune Admin Portal, Device Management Portal, and Endpoint Security Portal serve different purposes. The Intune Admin Portal is meant for administrators to manage and set up the Intune environment. The Device Management Portal, typically referenced as the Microsoft Endpoint Manager admin center, is where all devices are managed, and the Endpoint Security Portal is focused on security policies and configurations.