This eBook explains XDR as the evolution of EDR into a unified detection and response approach that extends visibility beyond endpoints to networks, users, cloud, and SaaS, addressing gaps left by SIEM and SOAR for small security teams. It outlines core XDR capabilities including extended telemetry, alert and data correlation, and automated response, then compares native, open, and hybrid XDR models, highlighting tradeoffs between simplicity, flexibility, and integration complexity. The book emphasizes that small teams struggle with budget, staffing, and tool sprawl, and argues that a natively integrated XDR platform delivers broader threat visibility, higher detection accuracy, faster response, and fewer false positives. By consolidating tools and automating investigation and remediation,

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