Merge pull request #196682 from Heidilohr/work-user-sessions

Adding user session information to environment article.

Author: ShannonLeavitt

articles/virtual-desktop/environment-setup.md

@@ -3,7 +3,7 @@ title: Azure Virtual Desktop environment - Azure
 description: Learn about the basic elements of a Azure Virtual Desktop environment, like host pools and app groups.
 author: Heidilohr
 ms.topic: conceptual
-ms.date: 04/30/2020
+ms.date: 05/02/2022
 ms.author: helohr
 manager: femila
 ---
@@ -53,6 +53,22 @@ A workspace is a logical grouping of application groups in Azure Virtual Desktop
 
 After you've assigned users to their app groups, they can connect to a Azure Virtual Desktop deployment with any of the Azure Virtual Desktop clients.
 
+## User sessions
+
+In this section, we'll go over each of the three types of user sessions that end users can have.
+
+### Active user session
+
+A user session is considered "active" when a user signs in and connects to their remote app or desktop resource.
+
+### Disconnected user session
+
+A disconnected user session is an inactive session that the user hasn't signed out of yet. When a user closes the remote session window without signing out, the session becomes disconnected. When a user reconnects to their remote resources, they'll be redirected to their disconnected session on the session host they were working on. At this point, the disconnected session becomes an active session again.
+
+### Pending user session
+
+A pending user session is a placeholder session that reserves a spot on the load-balanced virtual machine for the user. Because the sign-in process can take anywhere from 30 seconds to five minutes depending on the user profile, this placeholder session ensures that the user won't be kicked out of their session if another user completes their sign-in process first.
+
 ## Next steps
 
 Learn more about delegated access and how to assign roles to users at [Delegated Access in Azure Virtual Desktop](delegated-access-virtual-desktop.md).