App1: The requirement is for the application to be installed automatically for all users in the marketing department on any of their enrolled devices. A 'Required' assignment ensures the app is pushed and installed without user interaction. Assigning it to a user group ensures the policy follows the user, so the app is installed on any new or existing Windows device they enroll in Intune. App2: The requirement is for the app to be 'available for download' on personal, unenrolled Android devices for HR department users. An 'Available' assignment makes the app optional for users to install from the Company Portal. For devices that are not enrolled in Intune (common in Bring-Your-Own-Device scenarios), app assignments are targeted at user groups to allow access via the Company Portal without forcing device management.

Microsoft Intune Documentation - Add apps to Microsoft Intune: This document explains the

different assignment types.

Required: "The app is installed on devices in the selected groups." This forces the

installation.

Available for enrolled devices: "Users install the app from the Company Portal app or

Company Portal website." This makes the installation optional for users on managed

devices.

Available with or without enrollment: "Assign this app to groups of users with devices that

are not enrolled with Intune." This is the specific scenario for App2.

Reference: https://learn.microsoft.com/en-us/mem/intune/apps/apps-add#assign-an-app

Microsoft Intune Documentation - Assign apps to groups: This source clarifies the distinction

between user and device groups.

"If you assign the app to a user group, the app is available to that user on every device they

enroll in Intune... For unenrolled devices (BYOD), apps can be made available to users

through the Intune Company Portal." This directly supports the reasoning for both App1 and

App2 being assigned to user groups.

Reference: https://learn.microsoft.com/en-us/mem/intune/apps/apps-assign#assign-an-app-to-groups