SOC 2 vs ISO 27001: Which One Does Your Business Need?
The two most-requested security credentials — and they overlap a lot. Here’s how they differ, and how to choose.
Both prove you take information security seriously. The simplest way to think about it: ISO/IEC 27001 is an international certification you earn against a fixed standard, while SOC 2 is an American attestation report an auditor writes about your controls. One gives you a certificate; the other gives you a detailed report.
| ISO/IEC 27001 | SOC 2 | |
|---|---|---|
| Type | Certification (pass / continuous improvement) | Attestation report (an opinion) |
| Behind it | ISO/IEC (international) | AICPA (United States) |
| You receive | A certificate | A detailed report |
| Best recognised | Globally, incl. tenders & EU | US customers & SaaS buyers |
| Delivered by | ISO Lead Auditor | Assessor (AICPA framework) |
| Valid for | 3 years (annual surveillance) | A period — typically 6–12 months (Type II) |
QCan one assessment cover both?
Largely, yes. The underlying controls overlap so much that a well-planned engagement can gather evidence once and apply it to both — exactly where an integrated audit approach saves time and cost.
QIs one “harder” than the other?
Neither is harder — they’re structured differently. ISO 27001 weights a documented management system; SOC 2 weights demonstrating controls operated over time.