Supplier Rationalization Reducing the number of suppliers you buy from to fewer, more strategic relationships — like going from 50 vendors to 10.
Sole-Source Dependency When only one supplier can provide what you need, leaving no backup option if they fail or raise prices.
Category Segmentation Grouping purchases by type (mature vs. innovative, low-risk vs. high-risk) before deciding strategy — not treating everything the same.
Phantom Diversification Believing you have multiple suppliers when they all share the same upstream source — like having two stores that buy from the same warehouse.
Negotiating Leverage Your ability to walk away from a deal if terms aren't right. Disappears when you have no alternative suppliers.
Supply Chain Mapping Tracing where your suppliers' materials come from to identify hidden shared dependencies you didn't know existed.