The main function of Security Information and Event Management (SIEM) tools is to aggregate, analyze, and report on security data from various sources within an organization. SIEM solutions provide real-time monitoring, incident detection, and response capabilities by correlating security events and logs. This enables organizations to identify potential security threats, maintain compliance with regulations, and enhance overall cybersecurity posture. By consolidating data, SIEM tools facilitate efficient analysis and response, helping to mitigate risks.