With vCenter Server 7 Essentials, VMware has integrated many great new features that allow vSphere administrators to more efficiently manage their vSphere infrastructure. VMware vCenter Server Essentials provides the centralized management plane of the VMware vSphere solution and allows creating clusters of VMware ESXi hosts. By creating vSphere clusters with vCenter Server, this enables the enterprise vSphere capabilities and features.

Download from this https://customerconnect.vmware.com/downloads/info/slug/datacenter_cloud_infrastructure/vmware_vsphere/8_0 Install the program Login to your vcenter and apply the key your received.