Already in the very early days of trading, people realized that the transport of goods from sender to receiver is only efficient if the loading capacity of the carrying resource is fully used. Collecting shipments from similar areas and or type of goods were first specializations. Still today, we see the same characteristics in the logistic industry. Resource exchange and rest places became depots or hubs. Today hub and spoke models are synchronizing the goods flow in a detailed manner.
Whether acting as forwarder and/or carrier, the goal is the ideal utilization of resources and bringing this in line with customer expectations (speed, quality, and price).