ISO 42001 vs SOC 2: what is the difference?
- ISO 42001 certifies an AI management system; SOC 2 attests to security and related controls.
- ISO 42001 is a certification against a standard; SOC 2 is a CPA attestation report.
- They overlap in underlying disciplines but answer different questions: governing AI versus protecting data.
- Organisations selling AI to enterprises may need both; sequence them and reuse the shared groundwork.
- Current as of June 2026. This is general information, not legal advice.
What each assesses
- ISO 42001: An international standard for an AI management system. An accredited body certifies that your AI governance meets the standard. Its subject is AI: how you manage AI risk, data, lifecycle, transparency, and oversight.
- SOC 2: An attestation, performed by a CPA firm, against the Trust Services Criteria (security, and optionally availability, processing integrity, confidentiality, and privacy). Its subject is the security and operational controls protecting customer data.
The crucial distinction is subject matter: ISO 42001 is about governing AI; SOC 2 is about protecting data and systems. A strong SOC 2 says little about how you govern AI specifically, and a strong ISO 42001 says little about your general security posture.
Certification versus attestation
There is also a formal difference in what they produce:
| Dimension | ISO 42001 | SOC 2 |
|---|---|---|
| Type | Certification (international standard) | Attestation (CPA report) |
| Focus | AI management system | Security and related controls |
| Issued by | Accredited certification body | CPA firm |
| Output | Certificate | Attestation report |
| Recognition | International | Predominantly US |
Where they overlap
There is some overlap in the underlying disciplines. Both expect risk management, defined controls, monitoring, and evidence. An organisation with a mature control environment for SOC 2 will find some of the groundwork, around governance, documentation, and evidence, useful for ISO 42001, and vice versa. You can also incorporate AI-related considerations into a SOC 2, though SOC 2 does not provide the AI-specific governance depth that ISO 42001 does.
Why you might need both
If you sell software that uses AI to enterprise customers, you may well be asked for both: SOC 2 to show your security is sound, and ISO 42001 to show your AI is governed. They answer different questions that buyers increasingly ask together. Holding both lets you satisfy the full breadth of an enterprise security and AI governance review.
Choosing where to start
If your buyers are mainly concerned with data security, SOC 2 may be the first priority; if the questions are increasingly about AI governance, ISO 42001 is the one that answers them. Many organisations sequence the two, building on the shared groundwork. The efficient approach is to capture the underlying governance and control facts once and use them to support both, rather than running two entirely separate efforts.
Key terms
- Certification
- Independent attestation that a management system meets an international standard, issued as a certificate.
- Attestation
- A formal opinion, in SOC 2 issued by a CPA firm, about the design and operation of controls.
- Trust Services Criteria
- The AICPA criteria SOC 2 reports against: security, availability, processing integrity, confidentiality, and privacy.
- AI management system
- The structured set of policies, processes, roles, and controls used to govern AI.