Security information and event management (SIEM) is a holistic security management system used to detect, monitor, analyze, and respond to IT infrastructure events. SIEM systems identify abnormal behaviors and other threats for advanced monitoring and detection, forensics, and rapid remediation.

SIEM performs numerous tasks to provide comprehensive security monitoring and threat detection capabilities across security tools at scale. Here's a detailed overview of the SIEM process: Data collection, Normalization, Aggregation and correlation, Threat detection, Alerting and notification, Incident response and remediation, Reporting and compliance, and Continuous monitoring and improvement

SIEM goes beyond simple log management by incorporating user and entity behavior analytics, AI capabilities, and advanced security analytics. It provides continuous, centralized visibility into the security status of on-premises, cloud, and hybrid IT infrastructure using real-time and near-real-time analysis with context to deliver actionable insights. SIEM thus plays a vital role in enhancing cybersecurity resilience and enabling organizations to effectively manage their cybersecurity posture.