Henry Mintzberg, a graduate of McGill University, classifies organizations into five different types. These types are: simple structure or entrepreneurial, machine bureaucracy, professional bureaucracy, divisionalized form, and adhocracy or innovative.
Simple structure or entrepreneurial organizations are typically young organizations that have strong boundaries between supervisors and workers. The CEO of this organization has the power while the workers provide creativity.
Machine bureaucracy organizations have specific parts with specific roles in the organization, like a machine. Typically companies that use mass-production fall into this type of classification.
Professional bureaucracy organizations rely on individuals who work independently to achieve success for the company. Individuals have specialized skills that, when combined with other members of the company, benefit the organization.
Divisionalized form organizations are typically large companies that have separate divisions. Some of these divisions could include sales, accounting, and human resources.
Innovative organizations work best in areas that are fast-growing or changing. These organizations can easily adapt to any situation. These organizations also have highly skilled employees but lack structure.
For more information on Mintzberg's five types of organizations, please read Organizational Structure: Mintzberg's Framework written by Fred C. Lunenburg.