"Burns and Stalker" refers to a model of organizational structure developed by sociologists Graham Burns and Gareth Stalker in the 1960s. This model categorizes organizations into two types: mechanistic and organic. Mechanistic structures are characterized by rigid hierarchies, clear roles, and formal communication, making them suitable for stable environments. In contrast, organic structures are more flexible and adaptable, promoting collaboration and open communication. This type is better suited for dynamic environments where innovation and responsiveness are essential. The model highlights how different organizational designs can impact efficiency and effectiveness based on the external context.