A class that describes an application to be deployed by the Application Controller. An application is composed of a set of components residing on a set of hosts.

You can construct an ApplicationType object as a full specification of the application, including all hosts and components. Alternatively, you can start with an empty an ApplicationType object and incrementally fill in the hosts, components, and scripts. In the latter case, order matters, because a host must be added before you add a component that lives on that host.