Once you have deployed your Unwired Platform runtime components, you can create one or more relay server clusters, optionally with a load balancer.
A relay server cluster typically is used by a production environment using installed relay server binaries. If you plan to have multiple relay servers deployed to the DMZ, Sybase encourages you to use a load balancer. If you are testing the functionality of an application in a development or test environment, you can use Sybase Hosted Relay Service instead.