In the previous chapter, we explored how Microsoft Sentinel empowers security teams with centralized visibility, automated response, and advanced threat detection through its powerful SIEM and SOAR capabilities. We examined how to ingest and correlate data from diverse sources, build analytic rules, investigate incidents using the MITRE ATT&CK framework, and automate workflows using Logic Apps. These capabilities are essential for modern Security Operations Centers—but as threats evolve in speed and sophistication, reactive security operations alone are no longer sufficient.