Windows Server 2022 Remote Desktop Services 5 User CALs is the Remote Desktop Services (RDS) feature of Windows Server 2022 allows organizations to centralize and manage their desktops and applications, which can improve security, reduce costs, and simplify IT management. With 5 User CALs, up to 5 users can access these resources remotely, either through a web browser or using a Remote Desktop Protocol (RDP) client.