1. A system facilitating an execution environment in which one or more services can be made available for use by one or more devices independently of such devices' hardware, operating systems, or run-time environments, the system comprising: at least a portion of a logical bus; and at least one execution cluster component configured to interact with communications between an operating system layer and a runtime environment layer, an application layer, or both, the execution cluster component comprising at least an execution cluster membership component and an execution cluster event manager component; the execution cluster membership component configured to facilitate at least one of a QOS determination, a LOS determination, an interrogation of system components, or an execution cluster membership determination; and the execution cluster event manager component configured to access event messages from the logical bus, to generate event messages for the logical bus, or both.