Warehouses are commercial buildings used for storage of goods by manufacturers, importers, exporters, wholesalers, and transport businesses. They are large plain buildings in industrial areas equipped with loading docks and cranes or forklifts to load, unload, and move goods. Some warehouses are now completely automated using programmable logic controllers and logistics software to coordinate the movement of pallets and products without human workers. Automated warehouses help prevent spoilage of goods and make efficient use of vertical space to reduce land costs. Warehouse management systems control material movement and storage, shipping, receiving, putaway, and picking to optimize stock organization.