vService Manager allows you to manage the set of vServices that extensions provide and to configure virtual machines and vApps to be dependent on these vServices.
You access vService Manager from vCenter Solutions Manager. In the vSphere Web Client, vService Manager adds a vServices page in the Deploy OVF Template wizard and a tab in the Edit Settings dialogs of virtual machines and vApps. You can add dependencies on vServices to virtual machines and vApps directly in the vSphere Web Client.