Hi @Aaron Redpath,
Welcome to the Microsoft Q&A Platform! Thank you for asking your question here.
There are two ways to make applications available to users in Azure Virtual Desktop: as part of a full desktop or as individual applications with RemoteApp. You publish applications by adding them to an application group, which is associated with a host pool and workspace, and assigned to users. You publish applications in the following scenarios: https://learn.microsoft.com/en-us/azure/virtual-desktop/publish-applications-stream-remoteapp?tabs=portal
- For RemoteApp application groups, you publish applications to stream remotely that are installed locally on session hosts or delivered dynamically using app attach and MSIX app attach and presented to users as individual applications in one of the supported Remote Desktop clients.
- For desktop application groups, you can only publish a full desktop and all applications in MSIX packages using MSIX app attach to appear in the user's start menu in a desktop session. If you use app attach, applications aren't added to a desktop application group.
My Apps is a web-based portal that is used for managing and launching applications in Microsoft Entra ID. To work with applications in My Apps, use an organizational account in Microsoft Entra ID and obtain access granted by the Microsoft Entra administrator.
My Apps is separate from the Microsoft Entra admin center and doesn't require users to have an Azure subscription or Microsoft 365 subscription. For more information, please refer to this: https://learn.microsoft.com/en-us/entra/identity/enterprise-apps/myapps-overview?source=recommendations
If you have any further queries, do let us know.