Although security information and event management (SIEM) platforms have existed for more than 20 years, the SIEM of today has moved far beyond the log aggregation and storage upon which it was founded. Today's SIEM monitors the log data for anomalies and suspicious events triggering alerts based on unusual behavior and detection rules. It often serves as the workspace for security analysts to investigate incidents that are correlations of alerts with other contexts such as asset information, vulnerabilities, and threat intelligence. IDC expects that in the future, the SIEM will also be the response center of the SOC with automated handling of many incidents via playbooks. Generative AI (GenAI) assistants will be used to query the data, summarize information, and draft reports, connectors, detection rules, and playbooks to reduce some of the complexity in operating a SIEM. Last, they will guide analysts on next steps. 

IDC MarketScape: Worldwide SIEM for Enterprise 2024 Vendor Assessment