The term 'Span of Control' in ICS refers to:

The term 'Span of Control' in the Incident Command System refers specifically to the number of personnel that one supervisor can effectively manage. This concept is crucial in emergency management and response operations, as it helps to ensure effective communication and supervision within the incident management structure. An optimal span of control typically ranges from three to seven subordinates per supervisor, allowing for adequate oversight and support without overwhelming the supervisor with too many direct reports.

Effective span of control enhances coordination and increases the efficiency of operations during an incident, facilitating better decision-making and resource management. By maintaining a manageable number of direct reports, supervisors can focus on leadership tasks, ensuring that their team members are well-informed and adequately supported in their roles. This principle is fundamental to maintaining clear lines of authority and operational effectiveness in incidents of varying complexity.