Managed Security Service Providers now commonly include Security Information and Event Management, which aggregates alerts and logs from diverse systems to help detect incidents. Managed SIEM services assist with tool operation, monitoring, and basic investigations but often miss full end-to-end support. SOC-as-a-Service goes further, with providers owning the infrastructure and handling alert correlation, often serving smaller organizations without in-house SOC capabilities. Co-Managed SOC provides the most value, combining expert tuning, monitoring, triage, and policy reviews to optimize SIEM performance through a continuous improvement process, strengthening overall security maturity.

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