Set appropriate alert thresholds

Alert thresholds define the specific values or conditions at which a monitoring system triggers notifications about a metric's performance. Think of them like temperature alerts on a thermostat; you set boundaries that, when crossed, prompt action. These thresholds transform passive metrics into active monitoring systems that enable timely intervention.

When setting thresholds, balance the need for early warning against the risk of alert fatigue from too many notifications. Most metrics naturally fluctuate, so thresholds should account for normal variation rather than triggering on every minor change. For example, if your normal website conversion rate is 3-4%, you might set a warning threshold at 2.5% and a critical threshold at 2%.

Use historical data to establish reasonable thresholds based on typical performance patterns. Implement tiered alert systems that escalate based on severity and duration.