The impact of purchasing and supply chain management

  Write about describing the impact of purchasing and supply chain management on modern organizations' competitive success and profitability. Please incorporates the four pillars of purchasing and supply chain management in this paper also. Please provide some examples that can be helpful. Any online reference is acceptable. Classroom Textbook reference: (6th) Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson - Purchasing and Supply Chain Management-South-Western College_West (2016)