The document discusses different types of project organizations including functional, pure project, matrix, and mixed organizations. It provides details on the structure and advantages and disadvantages of each type. Specifically, it describes the functional organization as housing projects within functional departments led by functional managers. It notes advantages like specialization but disadvantages like lack of coordination. It then explains the pure project organization has a self-contained team fully dedicated to the project, but can result in inconsistencies. Finally, it outlines the matrix organization uses a horizontal structure drawing multi-disciplinary employees to projects without removing them from functions, allowing for better coordination and resource utilization but potentially violating the unity of command principle.