SOAR, SIEM, and XDR tools share some core functions, but each has its own unique features and use cases.
Security information and event management (SIEM) solutions collect information from internal security tools, aggregate it in a central log, and flag anomalies. SIEMs are mainly used to record and manage large volumes of security event data.
SIEM technology first emerged as a compliance reporting tool. SOCs adopted SIEMs when they realized SIEM data could inform cybersecurity operations. SOAR solutions arose to add the security-focused features most standard SIEMs lack, like orchestration, automation, and console functions.
Extended detection and response (XDR) solutions collect and analyze security data from endpoints, networks, and the cloud. Like SOARs, they can automatically respond to security incidents. However, XDRs are capable of more complex and comprehensive incident response automations than SOARs. XDRs can also simplify security integrations, often requiring less expertise or expense than SOAR integrations. Some XDRs are pre-integrated single-vendor solutions, while others can connect security tools from multiple vendors. XDRs are often used for real-time threat detection, incident triage, and automated threat hunting.
SecOps teams in large companies often use all of these tools together. However, providers are blurring the lines between them, rolling out SIEM solutions that can respond to threats and XDRs with SIEM-like data logging. Some security experts believe XDR may one day absorb the other tools, similar to how SOAR once consolidated its predecessors.