Products: things in demand at various facilities. At my organization, the product is oil and gas going through the pipeline. The demand would be the material to keep our tank farms and pipelines operational, while purchasing for new projects. Facilities: places where products are made, stored, sold or consumed. This would be our offices, tank farms, warehouses, & pipelines Vehicles: Mechanisms to move products between facilities. This would be pipe, trucks/flatbeds, airplanes Routes: paths for vehicles to move products between facilities. Delivery from supplier's facility to our warehouse or terminals/main offices