The agents that you need to install depend on the external systems with which you plan to integrate.

Table 1. Choosing an Agent Scenario
Integration Scenario Agent Requirements and Procedures
Provision cloud machines by integrating with a cloud environment such as Amazon Web Services or Red Hat Enterprise Linux OpenStack Platform. You do not need to install an agent.
Provision virtual machines by integrating with a vSphere environment. Installing and Configuring the Proxy Agent for vSphere
Provision virtual machines by integrating with a Microsoft Hyper-V Server environment. Installing the Proxy Agent for Hyper-V or XenServer
Provision virtual machines by integrating with a XenServer environment.
Provision virtual machines by integrating with a XenDesktop environment.
Run Visual Basic scripts as additional steps in the provisioning process before or after provisioning a machine, or when deprovisioning. Installing the EPI Agent for Visual Basic Scripting
Collect data from the provisioned Windows machines, for example the Active Directory status of the owner of a machine. Installing the WMI Agent for Remote WMI Requests
Provision virtual machines by integrating with any other supported virtual platform. You do not need to install an agent.