This paper looks at how the VMware vCenter product family, together with vSphere, represents the only complete stack for shifting the data center paradigm from component-level infrastructure management to true service-level management of dynamic IT infrastructure. It shows how the service level management approach enabled by VMware, as compared with the old component-level management approach, delivers tremendous advances in efficiency, control, and flexibility. From component-level management to the internal cloud and true service-level management, VMware provides an evolutionary approach that delivers revolutionary results.