Raw materials from suppliers or finished goods from manufacturers come into the warehouse, the information has to be available to say where these goods have to go, and they then get passed down the distribution chain to the customer.
A warehouse is a dynamic operation and can deliver a more profitable return on investment than many people realize.
Some goods move slowly. Others may move very quickly, but it all has to move. The different goods have to be planned, laid out, and handled according to how they are expected to move through the system.