"Traditional Microsoft Windows Desktop Environment
In a traditional Microsoft Windows desktop environment, a user profile is a collection of settings and data that is associated with a specific user. This profile is stored locally on the user's computer and is used to personalize their experience when they log in. The user profile includes settings for the user's desktop layout, taskbar, Start menu, and more. It also includes data such as the user's documents, pictures, and music.
Azure Virtual Desktop (AVD)
In AVD, a user profile can be stored either locally on the session host or in a central location, such as Azure Files. When a user logs in to AVD, their profile is loaded from the specified location. This allows users to have a consistent experience across multiple session hosts.
avdeplus-1
The "avdeplus-1" User Profile identity is a special profile that is used by AVD to manage the deployment of AVD resources. This profile is not used for normal user logins."
Hello https://learn.microsoft.com/en-us/users/na/?userid=de19fa1d-d65f-464d-8409-92f5735c9a73, I see it has been a long time since you posted this question but, I am now going into the same Topic area of discussion as yourself. So, in order to understand the "architecture" of the Azure Virtual Desktop, I have searched up SOME of the information related to this same "topic" and share it here in the hope it may STILL be of aid to your and possibly others "wandering" into this area of knowledge in the near future.
Let me know if after reading this you have further questions, or HOW things turned out (worked out) in your case with the SORT OF tasks you were hoping to perform using a User Profile in the Azure Virtual Desktop (AVD) or Azure Active Directory (AAD) environment.
I believe the Microsoft Software engineering team was "breaking new ground" with Azure and {honestly} "designing" or "engineering" the features of Azure as they went along, with a goal in mind of "mimicking" the familiar Windows' environments of the past, but also not being held back by the limitations of those same environments.
Kindly, ~ DC