1) A supply chain consists of all parties involved in fulfilling customer requests, including manufacturers, suppliers, transporters, warehouses, retailers, and customers. It involves functions like new product development, marketing, operations, distribution, finance, and customer service.
2) Supply chains involve the constant flow of information, products, and funds between different stages as items move from suppliers to manufacturers to distributors and finally to customers.
3) The objective of a supply chain is to maximize overall value, which is revenue generated from customers minus the total costs across the entire supply chain.