Shipping costs represent one of the most significant and volatile line items in the operating budgets of US manufacturers, retailers, e-commerce businesses, and third-party logistics providers. The US freight market — spanning truckload, less-than-truckload (LTL), parcel, ocean, and air cargo — processes trillions of dollars in annual shipments across a carrier landscape that includes hundreds of regional and national providers, each publishing and updating rates with a frequency and complexity that makes manual rate comparison practically impossible at any meaningful scale.