You purchased an application App1. A user named User1 must publish App1 using Azure AD Application Proxy. Which role should you assign to User1?

The Application administrator role is the most appropriate because it grants permissions to manage all aspects of enterprise applications, application registrations, and application proxy settings. This includes the ability to publish applications using Azure AD Application Proxy. The Cloud application administrator role has similar permissions but is slightly more restrictive, lacking some global application management capabilities that Application administrator possesses. The Hybrid identity administrator role focuses on managing hybrid identity configurations, not application publishing. The Cloud App Security Administrator role is for managing Microsoft Defender for Cloud Apps policies and alerts, not for publishing applications.