In CloudBees CD, a resource specifies an agent machine where job steps can be executed. Resources can be grouped into a pool, also know as a resource pool. CloudBees CD supports two types of resources:
Standard: specifies a machine running the CloudBees CD agent on one of the supported agent platforms
Proxy: requires SSH keys for authentication. You can create proxy resources (agents and targets) for CloudBees CD to use on numerous other remote platforms/hosts that exist in your environment.