An alert is a notification informing its recipients that a critical or very important situation has arisen. The situation is as severe that an action must be taken immediately in order to resolve the situation. The system recognizes the situation and sends the alert.
Alerts can be used to prevent delays in the processing of critical situations, because the time between discovering and responding to such situations is reduced considerably.
An alert is an instance of an alert category.
An alert could be used to notify recipients in the event of a production standstill or a budget being exceeded, for example.