Primary audience
CISO, SecOps manager, SOC lead
SIEM Selection and Onboarding Guide
Choosing a SIEM platform based on detection outcomes, operational workload, and TCO.
Typical decision window
30-75 days
Expected output
Vendor scoring matrix, ingestion strategy, 90-day onboarding roadmap
Implementation guidance
Define success criteria
- Prioritize use cases: credential theft, lateral movement, privileged misuse, data exfiltration.
- Estimate daily log volume and retention by data source quality, not just quantity.
- Model internal analyst capacity to avoid shelfware deployment.
Vendor evaluation structure
- Score detection engineering workflow, parser maturity, and response integration depth.
- Compare ingestion pricing assumptions and overage penalties.
- Test analyst UX with your own sample incidents before purchase.
Onboarding execution
- Onboard identity, endpoint, firewall, and email telemetry first.
- Create severity model and case routing rules before alert flood starts.
- Measure true positive rate and mean time to triage after each ingestion wave.
Recommended artifacts
- SIEM decision matrix (weighted)
- Detection onboarding backlog
- SOC operating model document