The vSphere ESX Agent Manager automates the process of deploying and managing ESX and ESXi agents, which extend the function of the host to provide the additional services that a vSphere solution requires.
The vCenter Solutions Manager displays information about the vSphere ESX Agent Manager, such as details about the extension, related tasks and events, agencies and agency issues, and a list of the virtual machines and vApps that belong to the Agent Manager. In the vSphere Client, you can resolve agency issues or delete agencies. You can also view the agency health status and state.