Remote Desktop Services (RDS CAL) is a Microsoft licensing solution that enables users or devices to securely access Windows Server remotely. RDS CALs are required for organizations that use Remote Desktop Services to provide remote desktops, virtual applications, and centralized access to business resources.

RDS CAL helps businesses support remote work, improve productivity, and simplify IT management by allowing employees to connect to company systems from virtually anywhere. It is widely used in enterprise environments, educational institutions, and organizations that require secure multi-user access to Windows Server.