Event Correlation is the process of examining multiple events from different sources to determine whether they are related. Instead of treating every activity as an isolated event, it looks at factors such as timing, location, source, and behavior to identify meaningful connections or patterns. This helps systems understand a larger situation from a series of individual events and can trigger appropriate actions when related activities occur.
For example, a security system might detect several failed login attempts, an unusual location, and a password change within a short period. By connecting these events, it can recognize a possible account compromise and raise an alert. Event Correlation is useful for security monitoring, system troubleshooting, fraud detection, and operational monitoring. It helps reduce noise, identify important patterns, and support faster responses.