Abstract: A method for managing transactions across a large number of service providers includes determining performance metrics associated with each of a plurality of service providers and generating a score for each service provider based on the performance metrics associated with each of the plurality of service providers taken over a short time period. The service providers are then sorted based on the scores to generate a list of service providers. Customer transactions are then assigned to one of the service providers based on the order of the list of service providers. The list of service providers is reprioritized based on mid-term metrics and accumulated costs taken over a mid-term period that is longer than the short term period.