Target costing is a cost management approach used in industries like machinery, chemicals, and steel manufacturing. It starts with determining the price customers are willing to pay, then sets a target cost by subtracting the desired profit from the price. Companies use value engineering and cross-functional teams to design products that meet the target cost through methods like redesigning components, finding cheaper suppliers, and improving production processes with kaizen. The goal is to continuously reduce costs while maintaining product functionality and customer expectations.