The Control-O monitor is a started task that handles rule processing. It detects messages, commands and events in the z/OS environment, and triggers rules accordingly.
It operates continuously 24 hours a day. It constantly scans the environment for messages, commands, and events that trigger predefined actions, that is, Control-O rules.
It interacts with the Control-O subsystem to manage all Control-O activity, and performs housekeeping tasks at regular intervals.