1. A method for providing improved load balancing of workload connection requests directed to application instances and data sharing members that are each supported in first and second sites, and wherein each of the first and second sites has its own copy of the application instances and data sharing members, comprising: associating together, as a combined workload group, the application instances and the data sharing members; receiving metrics associated with application instances and the data sharing members that together comprise the combined workload group; using the received metrics to generate a distribution policy for workload connection requests to access the application instances, the distribution policy being derived from the received metrics about the application instances and the data sharing members that have been associated together in the combined workload group; providing the distribution policy to a load balancer that has responsibility to select which of the first and second sites receives a particular workload connection request; and receiving and executing, by the load balancer, the distribution policy, wherein a selection by the load balancer is based on the distribution policy for the application instances and the data sharing members that have been associated together in the combined workload group to provide for the improved load balancing of the workload connection requests; wherein the application instances are hosted in an application tier in a first operating system environment, and wherein the data sharing members are hosted in a data tier in a second operating system environment, the first and second operating system environments being distinct from one another.