This is a DSP (OEM) license for Windows Server 2022 Datacenter edition, 64-bit, covering up to 24 cores, sold with no Client Access Licenses (CALs) included — CALs must be purchased separately to permit client devices/users to connect to the server. Datacenter edition is Microsoft's top server SKU, primarily distinguished from Standard by unlimited Windows Server virtual machine rights on the licensed physical host, making it the natural choice for heavily virtualized servers and private-cloud infrastructure. Being a DSP license, it's tied to the specific hardware it's first installed on, typically bought alongside new server hardware rather than as a transferable volume license.