Mapping common criteria for SOC 2 and ISO 27001 compliance (reuse evidence, cut duplicate work)

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Many SaaS companies pursue SOC 2 and ISO 27001 together. The frameworks use different language, but a large share of controls and evidence is the same. Mapping common criteria lets you run one security program with two assurance outputs.

Related guides:

• ISO 27001 vs SOC 2
• How CrowdComms uses ISO 27001 and SOC 2 together
• Achieve ISO 27001 and SOC 2 Type 2
• ISO 27001 collection

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Key takeaways

• SOC 2 Trust Services Criteria (security, availability, confidentiality, etc.) overlap heavily with ISO 27001 Annex A themes.
• Map at the control objective level, then attach one evidence set per shared objective where possible.
• ISO 27001 adds ISMS management system requirements (clauses 4–10) that SOC 2 does not replace.
• SOC 2 reports are point-in-time attestation; ISO 27001 emphasizes continual improvement and certification maintenance.

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Why map SOC 2 and ISO 27001 together?

Without mapping, teams maintain:

• Separate spreadsheets per framework
• Duplicate screenshots for the same MFA or access review
• Inconsistent policy versions

A shared library reduces cost and contradictions during customer diligence.

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Where frameworks overlap

Security domain	ISO 27001 (Annex A themes)	SOC 2 (typical criteria)
Access control	Technological / Organizational	CC6.x logical access
Change management	Technological	CC8.x change management
Risk management	ISMS clauses + Organizational	CC3.x risk assessment
Vendor management	Organizational	CC9.x vendor management
Monitoring & incidents	Technological / Organizational	CC7.x system operations
Security awareness	People	CC1.x control environment

Exact mappings depend on your SOC 2 trust categories (Security-only vs Availability, etc.) and your SoA.

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What does not map cleanly

ISO 27001 emphasis	SOC 2 emphasis
Formal ISMS clauses (internal audit, management review)	Trust Services Criteria + auditor opinion on controls
Certification cycle (surveillance)	Type I / Type II report periods
Annex A control catalog	Criteria + points of focus

Plan separate artifacts for ISMS governance even when technical controls are shared.

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Five steps to build a shared control library

1. Inventory existing SOC 2 controls and ISO Annex A applicability.
2. Normalize control IDs into a single internal taxonomy.
3. Attach evidence once per shared control (link from both framework views).
4. Document gaps where only one framework requires extra work.
5. Review quarterly—especially after tool or scope changes.

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Map frameworks in SecureSlate

SecureSlate supports cross-framework control mapping and shared evidence for ISO 27001 and SOC 2—so dual certification does not mean duplicate screenshots.

Start free trial

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Disclaimer (legal note)

Mapping guides are operational tools, not substitute for auditor or certification body scoping decisions.