Supply chain management (SCM)
Supply chain management (SCM) is the coordination of material, information, and money flows from raw-material suppliers through manufacturing and distribution to the end customer, and back again for returns. It spans planning, sourcing, making, delivering, and returning. Procurement and logistics are functions within it; SCM is the discipline that makes them act as one system.
Examples
Demand spike propagation: A power-tool maker sees orders jump 18% after a competitor's recall. Planning revises the forecast in week 1, procurement raises blanket-order releases in week 2, and the battery supplier confirms added capacity in week 4: a five-week lag the team now treats as its benchmark to beat.
Inventory positioning: Instead of stocking finished units, an HVAC manufacturer holds $2.1M of long-lead compressors and sheet metal, then assembles to order in 5 days. Same service level, 30% less inventory value exposed to obsolescence.
Returns loop: A consumer-electronics brand routes the 3% of units that come back through a refurbishment cell that recovers 70% of product value, instead of scrapping returns.
Definition
The standard framing breaks SCM into five activities: plan, source, make, deliver, return. Demand planning forecasts what customers will buy, procurement secures the materials, manufacturing converts them, and distribution gets product to customers. The management problem is that each function optimizes locally unless someone owns the flow end to end.
SCM is broader than logistics, though the words get swapped casually. Logistics moves and stores goods; SCM also decides what to make, what to buy, where to hold inventory, and how to respond when demand shifts. A flawless freight operation cannot save a supply chain planned against a bad forecast.
Three flows move at once: materials downstream toward the customer, information upstream (forecasts, orders, schedule changes), and money upstream as payment. Most supply chain failures are information failures first. A demand signal that never reaches a tier-2 supplier becomes a missed shipment a quarter later, which is why teams invest in supply chain visibility and disciplined inventory management: both shrink the lag between a change and the system's response.
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