The vCenter Server design includes determining the number of vCenter Server instances in the workload domain, their size, networking configuration, cluster layout, redundancy, and security configuration.

By using vCenter Server, you manage your vSphere infrastructure from a centralized location. It acts as a central administration point for ESXi hosts and their respective virtual machines. Implemented within the same appliance is the Platform Services Controller which provides a set of infrastructure services including vCenter Single Sign-On, License service, Lookup Service, and VMware Certificate Authority (VMCA).