Feedback control is a process used to manage and adjust the behavior of a system. It involves measuring the output of a system and comparing it to a desired target or setpoint. If there is a difference, or error, the system makes adjustments to minimize this discrepancy, ensuring that the output aligns more closely with the desired outcome. This concept is widely applied in various fields, including engineering, robotics, and even biology. For example, in a thermostat, feedback control helps maintain a specific temperature by turning the heating or cooling system on or off based on the current temperature readings.