This document summarizes the key points about the invention of shipping containers by Malcom McLean in 1956. It discusses how shipping had not changed in decades prior and involved labor-intensive loading and unloading of cargo. McLean realized that reducing shipping costs required a new system centered around standardized containers that could be easily loaded onto ships, trains and trucks. The introduction of containers revolutionized global trade by drastically improving shipping efficiency and reducing costs. Containerization remains the foundation for efficient global transport of goods today.