The NSX Manager is the management plane virtual appliance that helps configure logical switches and connect virtual machines to these logical switches. It also provides the management user interface an entry point for the NSX API, which helps automate deployment and management of the logical networks through a cloud management platform. In the NSX for vSphere architecture, NSX Manager is tightly connected to the vCenter Server managing the compute infrastructure. In fact, there is a 1:1 relationship between the NSX Manager and vCenter Server and, upon installation, the NSX Manager registers with vCenter Server and injects a plug-in into the vSphere Web Client for consumption within the web management platform.