Control is a regulatory process used by companies to establish performance standards, compare actual performance to those standards, and take corrective action when needed. It involves setting clear goals and metrics, continuously monitoring performance, identifying any deviations from standards, and implementing programs to correct deficiencies. Control is not a one-time process but rather a dynamic, cybernetic feedback loop that requires constant attention from managers to maintain standards over time. The main methods of control are feedback, concurrent, and feedforward.