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An association between a Service and how it is implemented. The cardinality of this association is many-to-many. A Service can be provided by more than one Logical Device, operating in conjunction. And, any Device can provide more than one Service. When multiple Devices are associated with a single Service, it is assumed that these elements operate in conjunction to provide the Service. If different implementations of a Service exist, each of these implementations would result in individual instantiations of the Service object. These individual instantiations would then have associations to the unique implementations.
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