For Amazon, a decision on how a customer order should be fulfilled is made quickly based on item location and other factors. However, there can be a five- to six-hour gap from when an order is placed to when the fulfillment center begins processing the order, and the plan may be updated if a nearby customer places an order later in the day.
This period prior to fulfillment gives Condor a chance to reevaluate the original decision multiple times to see if a more optimal route can be created.
