Security Information and Event Management (SIEM) aggregates and analyzes data from IT infrastructure to detect cyber threats and ensure compliance. Combining Security Information Management (SIM) and Security Event Management (SEM), SIEM offers real-time monitoring, threat detection, forensic analysis, and compliance reporting. It helps organizations manage massive log data, identify insider threats, and detect zero-day attacks. SIEM also enhances IoT security, incident response, and capacity planning. However, traditional SIEM solutions generate false alerts and require manual intervention.