An organizational structure divides tasks into jobs, groups jobs into departments, and coordinates relationships between jobs and departments. Developing or changing this structure is called organizational design, which involves decisions about six key elements: work specialization, departmentalization, chain of command, span of control, centralization/decentralization, and formalization. Common types of departmentalization include functional, product, customer, geographic, and process. The chain of command clarifies reporting relationships and authority. Span of control refers to the number of subordinates a manager oversees. Centralization concentrates decision-making at the top while decentralization pushes it down. Formalization standardizes jobs and guides employee behavior through rules.