Figuring out how to transport goods is among the most fundamental business decisions a company can make. In some cases, the means of moving product is limited as a function of availability or the geography over which a shipment must move. Shipments by truck and rail are primarily limited to land, for instance. Navigable waterways must be available for ships, and takeoff/landing strips must be available for air transportation to be viable. Where multiple options are available, the logistics manager must evaluate the service attributes and costs associated with available options.