Microsoft Sentinel SIEM Architecture: Cost-Optimized Ingestion & SOC Playbooks
Designing scalable Log Analytics workspaces, data collection rules (DCRs), and automated incident response logic apps.
Balancing Visibility with Log Ingestion Budgets
Security teams often face runaway cloud bills when streaming all server and firewall logs into Azure Log Analytics. Successful Sentinel deployments use Data Collection Rules (DCRs) to filter out benign telemetry at the collection agent before ingestion occurs.
Prioritizing High-Fidelity Analytic Rules
Deploy pre-built Microsoft threat intelligence rules, Fusion machine learning detections, and specialized KQL queries targeting anomalous user sign-in patterns, mass file downloads from SharePoint, and sudden role assignments in Entra ID.
Automated Playbooks with Logic Apps
When high-confidence alerts trigger (such as impossible travel with confirmed credential theft), automated SOAR playbooks should revoke active user session tokens, disable the account in Entra ID, and notify on-call SOC analysts within seconds.
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