SERVICE SELECTION FOR REDUCED COMPOSITION COST

摘要

It is described a concept for a service selection of at least two services of a composite service wherein a composite service description (100) of the composite service includes at least two service templates (102a, 102b, 102c), each of which defines at least one constraint for a service wherein the service is to be executed in place of the service template to thereby constitute part of the composite service. From service database there is selected for each service template a corresponding candidate set comprising at least one service matching the at least one constraint of the service template. Subsequently or at least partially simultaneously for each of the at least two service templates (102a, 102b, 102c), from the corresponding candidate set one service is selected so as to provide, based on a predetermined cost metric, for a reduced composition cost. The predetermined cost metric may include a latency metric, an energy efficiency metric, a co-location metric or a traffic metric, etc.