Packing consists of appropriate placement and distribution of the goods inside of a cargo transport unit (CTU) (shipping container, lorry trailer, etc.), while securing or attachment is the set of techniques used to prevent shifting of the goods during shipping. Both of these processes depend upon factors such as the characteristics of the transport unit, the shape and weight of the goods, and their packages or containers, among others.

Who is responsible?
The shipper is responsible for preparing the goods in packages or containers appropriate for the mode of transport and for the vehicle that will be used.
The shipper is also responsible for adequately packing and securing the cargo, except in operations where the logistical operator has been expressly contracted to do this.