Tenant contains internal users with Microsoft 365 E5 licenses and partner Fabrikam users with no licenses. Sub1 has host pool Pool1 with RemoteApp App1. Fabrikam users must be licensed via Per-user access pricing, App1 must be accessible to all internal and Fabrikam users, and costs must be minimized. What should you do first?

Adding the Fabrikam users to the application group that contains App1 is the correct first step because it directly addresses the requirement for all users to access App1. Azure Virtual Desktop (AVD) allows external users, like those from Fabrikam, to access resources without needing a Microsoft 365 license if Per-user access pricing is used, which is specified in the scenario. This approach minimizes costs as it avoids unnecessary license purchases. Adding a new host pool or assigning F3 licenses are incorrect because they are not necessary for granting access to existing applications for external users under Per-user access pricing, and would incur additional, unnecessary costs. Adding a new host pool to a new subscription is also incorrect for similar reasons and introduces unnecessary complexity.