You have a Microsoft 365 E5 subscription that contains 100 iOS devices enrolled in Microsoft Intune. You need to deploy a custom line-of-business…

For deploying custom line-of-business (LOB) applications to iOS/iPadOS devices using Microsoft Intune, the app package file must be in the .ipa format. This is the standard application archive file format used by Apple's iOS. Before uploading to Intune, the .ipa file must be signed with an in-house certificate or a provisioning profile from the Apple Developer Program. Intune uses this file to distribute and install the application on enrolled devices.

A. .intunemac: This file extension is used for deploying line-of-business apps to macOS devices, not iOS devices.

C. .apk: This is the Android Package Kit file format used for distributing and installing applications on Android devices.

D. .appx: This file format (along with .msix, .appxbundle, .msixbundle) is used for deploying applications to Windows devices.

1. Microsoft Learn. (2024). Add an iOS/iPadOS line-of-business app to Microsoft Intune.

Section: Select the app package file

Quote: "In the Add app pane

click Select file. In the App package file pane

select the browse button. Then

select an iOS/iPadOS installation file with the extension .ipa."

URL: https://learn.microsoft.com/en-us/mem/intune/apps/lob-apps-ios

2. Microsoft Learn. (2024). App types in Microsoft Intune.

Section: Line-of-business (LOB) apps

Content: This document provides a table that outlines the supported LOB app file types for each platform. It explicitly lists .ipa for iOS/iPadOS

.apk for Android

.appx (and others) for Windows

and .intunemac for macOS

confirming the distinct usage for each file extension.

URL: https://learn.microsoft.com/en-us/mem/intune/apps/apps-add#line-of-business-lob-apps