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SOC2 vs ISO 27001
SOC2 and ISO 27001 are two important security compliance standards that serve different but complementary purposes. But which one is best for you?
US SaaS buyers ask for SOC 2. EU and APAC buyers often ask for ISO 27001. Founders treat that as a fork in the road. It is usually a sequencing problem.
Both are voluntary. Neither equals "secure." Compliance is the floor - I wrote that fight up in Security vs. Compliance.
ISO 27001
ISO/IEC 27001:2022 is a management-system standard. You build an Information Security Management System across people, process, and technology, get certified by an accredited body, keep it alive with surveillance audits. Scope is wide. Privacy is not the centre of gravity - many orgs add ISO 27701 when they need a privacy management system.
SOC 2
SOC 2 comes from AICPA. It is an attestation against Trust Services Criteria (security, availability, processing integrity, confidentiality, privacy), usually aimed at service orgs holding customer data.
- Type 1 - controls designed correctly at a point in time
- Type 2 - controls operated effectively over a period (often 3-12 months)
US cloud and SaaS deals lean hard on Type 2.
Quick compare
| Feature | SOC 2 Type 1 | SOC 2 Type 2 | ISO 27001 |
|---|---|---|---|
| Focus | Design at a point in time | Operating effectiveness over time | Full ISMS |
| Output | Audit report | Audit report | Certification |
| Typical recognition | Strong in the US | Strong in the US | Global |
| Scope | Chosen Trust Services Criteria | Chosen Trust Services Criteria | Defined ISMS scope |
| Auditor | CPA firm | CPA firm | Accredited certification body |
Rough shapes - your RFP and industry will move the needle.
SOC 3 is the public, sanitised cousin of a SOC 2 report - less detail, safer to share broadly.
What I tell founders
If your revenue is US SaaS, start with SOC 2 Type 2 - that is what procurement will ask for. If you sell into regulated or European markets, ISO 27001 often shows up first. Doing both is common: ISO gives you the management system; SOC 2 proves a customer-facing system over time. Shared controls mean it is not twice the work.
Pick the one that unblocks the next deal. Build the ISMS habits either way - certificates expire, attackers do not.
Related
- Security vs. Compliance for why meeting compliance requirements is not the same as being secure