This document summarizes key concepts from a chapter on organization structure from a management textbook. It discusses the meaning and characteristics of organizations, the process of organizing, principles of organizing like specialization and span of control, different bases for departmentalization including process, product, and customer. It also covers organization structures like mechanistic vs organic, factors to consider in structure choice, emerging structures like networks and virtual organizations. International structures and how multinational enterprise choices evolve over time are also summarized.