Windows Server Client Access Licenses (CALs) allow users or devices to access a Windows Server. CALs are available in two types: User CALs and Device CALs. User CALs are ideal for businesses with employees that need to access the server from multiple devices. Device CALs are best suited for businesses where multiple employees use the same device to access the server. Windows Server CAL pricing depends on the type of CAL and the number of licenses required. CALs can be purchased individually or as part of a package. Stay compliant with Windows Server licensing requirements by purchasing the correct number and type of CALs for your business needs.