Routing in supply chain management refers to determining the most efficient paths for the transportation of goods from suppliers to warehouses, and ultimately to customers. Effective routing reduces transportation costs, delivery times, and carbon footprint while ensuring timely replenishment of inventory. Optimized routing involves considerations such as vehicle capacity, delivery windows, traffic conditions, and load consolidation. Technologies like GPS tracking and route optimization algorithms play a key role in dynamic routing decisions. Efficient routing directly impacts inventory levels by controlling lead times and improving supply chain reliability.