Professional bureaucracy is an organizational structure characterized by a high degree of specialization and formalization. In this model, professionals, such as doctors or engineers, have significant autonomy in their work, relying on their expertise to make decisions. The organization typically has standardized procedures and rules that guide operations, ensuring consistency and quality in service delivery. In a professional bureaucracy, communication flows primarily through established channels, and roles are clearly defined. This structure is often found in institutions like hospitals or universities, where skilled professionals collaborate to achieve common goals while maintaining their independence in specialized tasks.