Evolve your data center and accelerate innovation with Microsoft Windows Server, the cloud-capable operating system. Windows Server 2022 offers modern multi-layered security, hybrid capabilities with Azure, and a flexible application platform.

With a Device CAL, you acquire a CAL for each device that accesses your server, regardless of the number of users who use that device to access the server. With a User CAL, you acquire a CAL for all users who access the server to utilize services such as file storage or printing, regardless of the number of devices used for access.