SOC 2 vs ISO 27001 for health-tech: which one first?
Led ISO 27001 at Qualio, SOC 2 at Bilt
Choose SOC 2 first if your buyers are US enterprises; choose ISO 27001 first if you sell into Europe or quality-driven industries.
SOC 2 is a US-centric audit report from a CPA firm. ISO 27001 is an international certificate for running a full security management system. They share most of the same underlying controls, so health-tech companies serving both markets often build once and certify to both, and add HIPAA alignment on top.
Both frameworks prove you take security seriously. The difference is who recognizes them, what artifact you end up holding, and how the audit works, which is what should drive your choice.
What each one is
SOC 2 (Service Organization Control 2) is an attestation report issued by a licensed CPA firm under the AICPA's Trust Services Criteria. You end up with a detailed report describing your controls and the auditor's findings, shared with customers under NDA. It's the dominant standard in the United States.
ISO 27001 is an international standard for an Information Security Management System (ISMS). An accredited certification body audits you and, if you pass, issues a certificate valid for three years with annual surveillance audits. You end up with a certificate you can display, and it's the more widely recognized standard internationally, especially in Europe.
- Geography decides the default. US buyers ask for SOC 2; European and international buyers lean ISO 27001.
- Report vs certificate. SOC 2 gives you a detailed NDA report; ISO 27001 gives you a displayable certificate.
- Controls overlap heavily. Build the security foundation once and map it to both frameworks.
- Neither equals HIPAA. Health-tech usually needs HIPAA alignment on top, sharing the same control base.
SOC 2 vs ISO 27001, side by side
| Dimension | SOC 2 | ISO 27001 |
|---|---|---|
| Type | Attestation report (CPA firm) | Certification (accredited body) |
| Governing body | AICPA (United States) | ISO / IEC (international) |
| Strongest recognition | United States | Europe, UK, international, regulated industries |
| What you hold | Detailed report, shared under NDA | Public certificate, valid 3 years |
| Focus | Controls mapped to Trust Services Criteria | A full, running security management system (ISMS) |
| Audit structure | Type I snapshot or Type II over 3–12 months | Stage 1 + Stage 2 audit, then annual surveillance |
| First-year cost (startup) | ~$10k–$60k | ~$10k–$60k |
| Typical first timeline | 1–3 months (Type I); 6–12 months (Type II) | 3–6 months to first certification |
Not sure which your buyers will accept?
Tell me who's asking and where your deals are stalling. I'll tell you which framework unblocks them fastest.
How to decide which comes first
Strip away the detail and the decision comes down to who is asking you for proof:
- US enterprise buyers dominate your pipeline? Start with SOC 2. It's the artifact their procurement teams expect, and Type I can unblock a deal quickly.
- Selling into Europe, the UK, or regulated/quality-driven industries? Start with ISO 27001. It's the standard those buyers recognize and often require.
- Both markets matter? Pursue SOC 2 first for speed, then add ISO 27001. Because the controls overlap, the second certification is far cheaper than the first once the foundation exists.
- Health-tech handling patient data? Whichever you choose, plan for HIPAA alignment in parallel, the same infrastructure supports all three. See HIPAA for health-tech startups.
Why the controls overlap matters
The reason "do both" is realistic and not double the work: SOC 2 and ISO 27001 rest on the same security fundamentals, access control, encryption, monitoring, incident response, vendor risk, change management. Build single sign-on, device management, endpoint detection, and a documented policy set once, and you've satisfied the majority of both frameworks plus most of HIPAA's Security Rule. The efficient approach is to design the control environment once, then map the evidence to each framework, rather than running three disconnected compliance projects. That mapping is a core part of what a fractional CIO does.
Where I've done this
I led ISO 27001 certification at Qualio over a two-year engagement, and SOC 2 (plus PCI) to zero major findings on first audit at Bilt. The pattern that holds across both: the framework choice matters less than building real controls underneath, because that's what makes any audit pass and any security review answerable.