The diagram depicts a vital procedure for any company that buys products or services from outside vendors. Changes in the supplier's capacity to meet customer demands on time and according to the agreed-upon quality standard must be managed, monitored, and acted upon. Multiple methods exist for keeping an eye on and bettering supply chain quality. When assessing a supplier's effectiveness, businesses must think about a wide range of factors, including product quality, price, and regulatory compliance. It is difficult to ensure compliance at every stage if there is no system in place to track it.