SOC 2 is the dominant security certification for B2B SaaS in the US and has become widely expected by enterprise customers globally. NIS2 is a binding EU regulation. They are not the same thing, and they serve different purposes — but they overlap significantly, and building to SOC 2 standard provides a strong foundation for NIS2 compliance.
This article explains what each covers, where they differ, and whether you need both.
What SOC 2 Is
SOC 2 is an auditing standard developed by the American Institute of Certified Public Accountants (AICPA). A SOC 2 Type II report represents an independent auditor's assessment that an organisation has maintained controls relevant to the trust service criteria over a period of time (typically 6–12 months).
The five trust service criteria:
- Security (CC): The system is protected against unauthorised access — the only mandatory criterion
- Availability (A): The system is available for operation and use as committed
- Processing Integrity (PI): System processing is complete, valid, accurate, timely
- Confidentiality (C): Information designated as confidential is protected
- Privacy (P): Personal information is collected, used, retained, disclosed in conformity with privacy commitments
SOC 2 is voluntary — there is no regulation requiring it. It is market-driven: enterprise customers in the US, UK, and increasingly Europe request SOC 2 reports as a condition of vendor qualification.
What NIS2 Is
NIS2 is binding EU law. It applies to specific categories of organisations (essential and important entities) and has defined legal obligations — security measures, incident reporting, registration, management accountability. Non-compliance is enforced by national authorities with fines up to €10 million or 2% of global turnover.
NIS2 does not produce a report or certificate. It imposes ongoing obligations. Compliance is demonstrated through:
- Implemented security measures and documented risk management
- Registration with national competent authorities
- Incident reporting procedures
- Management governance
Where SOC 2 and NIS2 Overlap
SOC 2 Type II (Security criterion) covers most of what NIS2 Article 21 requires technically:
| NIS2 requirement | SOC 2 coverage |
|---|---|
| Risk analysis and security policies | CC3 (Risk assessment), CC5 (Control activities) |
| Incident handling | CC7 (System operations), CC7.4 (Incident management) |
| Business continuity | A1 (Availability), CC7.5 |
| Access control | CC6 (Logical and physical access) |
| Cryptography | CC6.1 |
| Network security | CC6.6, CC6.7 |
| Vulnerability management | CC7.1 |
| Supply chain security | CC9.2 (Risk management — vendor/partner) |
| Human resources security | CC1.4, CC1.5 |
| MFA | CC6.1, CC6.6 |
A well-implemented SOC 2 Type II programme addresses most of the technical security controls NIS2 requires.
Where NIS2 Goes Beyond SOC 2
1. Specific Incident Reporting to Authorities
SOC 2 has no external reporting obligation. NIS2 requires 24-hour early warning and 72-hour notification to national CSIRTs. This is entirely outside SOC 2's scope.
2. Management Body Accountability
NIS2 Article 20 creates explicit legal accountability for management bodies. SOC 2 may include governance controls, but it does not create statutory personal liability for directors.
3. EU Registration
NIS2 requires registration with national competent authorities. SOC 2 has no equivalent.
4. Supply Chain Security Depth
SOC 2 CC9.2 covers vendor risk management, but NIS2 requires documented risk assessment of each direct ICT supplier and contractual security requirements with them. The depth of NIS2 supply chain requirements typically exceeds what SOC 2 auditors verify.
5. Legal Enforcement
SOC 2 non-compliance is a commercial matter — you lose a sales qualification. NIS2 non-compliance is a regulatory matter — you face fines, audits, and potential management sanctions.
Do You Need Both?
If you are not in NIS2 scope: SOC 2 alone is sufficient for market expectations. NIS2 does not apply to you.
If you are in NIS2 scope AND have SOC 2: Your SOC 2 programme is a strong foundation. Add:
- NIS2-specific incident reporting procedures
- Authority registration
- Management body governance documentation
- Enhanced supply chain risk assessments
If you are in NIS2 scope but do not have SOC 2: The NIS2 security requirements are similar to SOC 2 Security + Availability. Implementing NIS2 and pursuing SOC 2 simultaneously is efficient — the control sets are largely the same.
Enterprise market reality: US-headquartered enterprise customers ask for SOC 2. EU enterprise customers ask for ISO 27001 or NIS2 compliance evidence. For SaaS companies targeting both markets, ISO 27001 + NIS2 compliance is the EU-market approach, while SOC 2 covers the US.