Abstract: A warehouse management system that maximizes throughput and reduces carrying costs by reducing the number of stops that a container makes in the process of fulfilling a customer order. This is accomplished by allocating inventory to orders using the following series of considerations. First, the system selects a pod in order to maximize throughput. If there are multiple locations within the pod that stock the same inventory item, then the method chooses one of those locations based upon the expiration date. Finally, if multiple of these locations have units that expire within the same expiration period, the location with the fewest units is chosen.