VMware's vCenter server software enables you to administer and manage your virtual machines and physical servers running VMware's ESXi OS from a single location. ESXi is a type-1 hypervisor that enables you to deploy and manage virtual machines.
The vCenter software reduces management complexity and time taken to manage complex deployments and reduces day-to-day tasks of managing a large deployment. vCenter Server software enables dynamic provisioning new services, balancing resources and automating high availability of your resources.