Inventory management and materials management are often used interchangeably, but they are not the same thing.
Inventory management is one part of the system
Inventory management focuses on what is stocked: quantities, locations, accuracy, replenishment, cycle counts, valuation, excess, and availability. Those controls are essential, but they do not address everything that happens before material reaches the shelf or after it leaves.
Materials management connects the full lifecycle
Materials management links planning, procurement, supplier performance, expediting, receiving, inspection, preservation, warehousing, inventory control, staging, issue, asset accountability, project execution, surplus, and closeout.
The difference matters because many inventory problems are actually symptoms of upstream or downstream process failures. Excess stock may come from poor planning. Shortages may come from weak procurement visibility. Inaccurate balances may come from receiving, issue, or master-data problems.
Look beyond the stockroom
When an organization treats inventory as an isolated warehouse problem, improvement tends to be temporary. Strong materials performance requires clear ownership across the entire operating chain.