Resin's cloud support is an extension of its clustering. It is the third generation of Resin clustering, designed for elastic clusters: adding and removing servers from a live cluster.
A triple-redundant hub-and-spoke network is the heart of a Resin cluster. The three servers that form the hub are called the 'triad' and are responsible for reliability and for load-balancing clustered services like caching. All other servers can be added or removed without affecting the shared data.
Services like clustered deployment, caching, JMS, and load-balancing recognize the new server and automatically add it to the service. When you delete a server, the services will adapt to the smaller network.