ISO 27001:2022 vs SOC 2: Which does your company actually need?

If enterprise customers are asking about your security posture, the question usually arrives as one of two acronyms. Both certify that your security program works; they differ in geography, audience and mechanics.

What each one is

ISO 27001 certifies your information security management system (ISMS) against an international standard. It's certification-based: an accredited body audits you, you get a certificate valid for three years with surveillance audits between. Strongest recognition in Europe, Asia and India.

SOC 2 is an attestation, not a certification: a CPA firm examines your controls against the Trust Services Criteria and writes a report. Type I covers design at a point in time; Type II covers operating effectiveness over a period (usually 6–12 months). It's the default ask from US customers.

How to choose

Selling to US enterprises? SOC 2 Type II, full stop — it's what their vendor-risk teams are trained to consume. Selling to European, Indian or global enterprises — or to regulated industries? ISO 27001 travels better. Selling everywhere, or planning to? Do both, deliberately.

The 80% overlap nobody prices in

The control substance — access management, change management, incident response, vendor management, logging — is largely identical. Companies that pursue them separately, with different consultants and different control sets, pay twice for the same work and maintain two bureaucracies forever.

The efficient path: build one control set mapped to both frameworks, generate evidence once, and let each audit consume the same artifacts. Done this way, adding SOC 2 to an ISO program (or vice versa) costs a fraction of the first effort.

Realistic effort

For a 50–300 person company with reasonable hygiene: 3–6 months to first certification/attestation readiness, driven mostly by scope and evidence discipline. The recurring cost matters more than the first-year cost — design for maintainability, not for passing once.