The Microsoft Cloud Security Benchmark (MCSB) is Microsoft’s primary cloud security framework for securing workloads across Azure, multi‑cloud (AWS, GCP), and hybrid environments. It provides prescriptive, cloud‑specific security controls that map directly to real‑world threats and compliance requirements.
It is automatically applied when you enable Microsoft Defender for Cloud, and it becomes the baseline against which your Secure Score is measured.
This makes MCSB one of the most practical and operationally useful cloud security frameworks available today.
Prescriptive Security Controls
Unlike generic frameworks, MCSB provides Azure‑aware, cloud‑specific controls with technical implementation steps.
Examples include:
Identity hardening
Network segmentation
Data encryption
Logging and monitoring
DevOps and workload protection
AI security (new in v2)
2. 12 Security Domains (v1) → Expanded Domains (v2 Preview)
Domains cover the full cloud attack surface, such as:
Identity Management
Privileged Access
Network Security
Data Protection
Logging & Threat Detection
DevOps Security
AI Security (new domain in v2)
3. Azure Policy Mappings
MCSB includes 420+ built‑in Azure Policy definitions that automatically assess compliance and provide remediation guidance.
This makes it highly operational and measurable.
4. Multi‑Cloud Alignment
Although Azure‑focused, MCSB applies cloud‑neutral principles that extend to AWS, GCP, and hybrid environments.
5. Compliance Alignment
Implementing MCSB helps organisations meet major standards:
NIST CSF
CIS Controls
ISO 27001
PCI DSS
HIPAA
GDPR
Why Organisations Use MCSB
It is Microsoft’s official cloud security baseline
It drives Secure Score, giving measurable progress
It provides real‑world, threat‑based guidance
It maps to major compliance frameworks
It is automatically assessed in Defender for Cloud
It includes AI security controls for modern workloads