Multi-tier resilience portfolio design

A method that performs well on average may still fail at the tail. This note examines multi-tier resilience portfolio design with attention to stress cases, feasibility and operational control.

Practitioner lens

A model for multi-tier resilience portfolio design should state its objective and feasible set explicitly. Hidden penalty weights or relaxed constraints can make an impressive result operationally impossible.

First experiment

Compare against a transparent baseline under both routine conditions and deliberately adverse scenarios.

This is an original educational brief. It is a starting point for discussion, not a claim that one technique fits every supply chain.