Supply chain resilience is the design and management of supply networks to absorb shocks—supplier failures, natural disasters, geopolitical disruptions, pandemics—without cascading failure. It combines redundancy (multiple suppliers), diversification (geographic spread), flexibility (contract terms that allow pivots), and visibility (real-time tracking). Resilient supply chains are not optimized for cost alone; they trade some efficiency for robustness. Instead of one low-cost supplier, you maintain relationships with 2–3 suppliers. Instead of just-in-time inventory, you buffer critical components. The goal is to survive disruptions with minimal revenue impact.