This document discusses organizational structures and designs. It defines organizational structure as the formal configuration between individuals and groups regarding task allocation, responsibilities, and authorities. An organizational chart is a diagram representing connections between departments. Key elements that impact organizational design are discussed, including work specialization, departmentalization, authority/responsibility, span of control, centralization vs decentralization, and formalization. Traditional and contemporary organizational designs like functional, divisional, matrix, team, project, boundaryless, virtual and learning organizations are described.