Frameworks

SOC 2 vs ISO 27001 for vendor assessment

Vendors send whichever attestation they have. Assessment programs need a way to read both against the same internal requirements.

May 21, 2026 · 9 min read

SOC 2 vs ISO 27001 for vendor assessment

Different artifacts, different assurance

A SOC 2 Type II report describes control operation over a period and includes an auditor opinion. An ISO 27001 certificate confirms a management system was certified, with detail carried in the Statement of Applicability.

Mapping to one requirement set

Rather than treating each framework as a separate review, map both to the internal requirements you actually care about, then record which evidence satisfies each requirement.

Handling gaps

Where neither artifact covers a requirement, the gap itself is the finding. Record it with the missing evidence type so remediation has a clear ask.

Frequently asked questions

What is the difference between SOC 2 and ISO 27001?

SOC 2 is an audit report on control effectiveness against trust services criteria, mostly used in North America. ISO 27001 is an international certification of an information security management system, with controls chosen through a documented risk treatment process.

Is ISO 27001 better than SOC 2?

Neither is universally better. SOC 2 Type II gives detailed evidence of how controls operated over a period, while ISO 27001 shows a certified, continuously maintained management system. Which fits depends on your requirements and the vendor's market.

Can a vendor hold both certifications?

Yes, and many enterprise vendors do. When both exist, read the SOC 2 for control detail and exceptions and the ISO certificate plus Statement of Applicability for scope.

Do these certifications cover privacy requirements?

Only partly. Neither replaces a data processing agreement, a subprocessor review, or a transfer mechanism assessment under privacy regulations such as GDPR.

What if a vendor has neither certification?

Assess the underlying controls directly using policies, penetration test results, architecture documentation, and contractual commitments, and scale the depth of review to the sensitivity of the data involved.

ProcureCortex turns vendor documentation into structured, explainable compliance findings. Explore demo or explore the platform.

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