It should be noted that vCenter 6.7 is the final release where Windows modules will be available, see here for more information. The vCenter Server is a centralised management application and can be deployed as a virtual appliance or Windows machine. VMware vCenter Server pools ESXi host resources to provide a rich feature set delivering high availability and fault tolerance to virtual machines.
Finally, the Windows vCenter Server and external PSC deployment models are now depreciated and not available with vSphere 7.0. Upgrade to vSphere 7 can be achieved directly from vSphere 6.5.0 and above, for more information see the VMware Upgrade Matrix. VMware vSphere 6.5 and 6.7 reaches end of general support 15 October 2022, both referenced in the VMware Lifecycle Matrix.