supply chain

A supply chain is a complex logistics system that consists of facilities that convert raw materials into finished products and distribute them to end consumers or end customers, while supply chain management focuses on the optimization of the flow of goods within the supply chain's distribution channels to ensure efficiency.
In sophisticated supply chain systems, the reintroduction of used products into the supply chain may occur at any point where the residual value of the product is recyclable. Supply chains are linked to value chains, and suppliers within a supply chain are often organized into tiers. First-tier suppliers, also referred to as "direct suppliers", directly supply goods or services to the client. Second-tier suppliers supply to the first tier, and so on, creating a hierarchical structure within the supply network.
The phrase "supply chain" may have been first published in a 1905 article in The Independent, which briefly mentioned the difficulty of "keeping a supply chain with India unbroken" during the British expedition to Tibet.

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