Procurement & Supply Chain / Risk & Sourcing
Supplier Concentration / Single-Source Risk ~ (aliases: spend concentration, sole-source risk, supplier dependency, HHI)
How dependent the company is on one supplier (or one region) for a category, the risk that a single failure stops the line.
The fork, why two teams get different numbers
Single-source vs sole-source, and how concentration is measured.
In the Metric Library
- The full fork, both definitions worked all the way through
- The trap that makes the number lie, on a real export
- Every formula variant, spelled out
- The reconciliation anchor, what to tie it to and when to refuse
Reference: ISM · APICS/SCOR (supply-chain risk)