Compliance framework comparisons
Not sure which framework you need? These side-by-side comparisons break down how the major standards differ — and which one (or which combination) fits your situation.
ISO/IEC 27001 vs SOC 2
The core difference is what you walk away with: ISO/IEC 27001 is an international standard you get certified against by an accredited certification body, while SOC 2 is an independent examination by a licensed CPA firm that produces an attestation report, not a certificate. ISO 27001 is the dominant credential for global and EU/UK enterprise deals; SOC 2 is the default for US and North American B2B SaaS. If your buyers are international, lean ISO 27001; if they are US enterprises sending vendor security questionnaires, they are usually asking for SOC 2 — and many companies end up needing both.
NIST CSF 2.0 vs ISO/IEC 27001
The core difference: NIST CSF 2.0 is a voluntary, self-assessed cybersecurity framework you use to organize and measure your security program, while ISO/IEC 27001 is an internationally recognized standard you can be formally certified against by an accredited body. NIST CSF gives you a flexible, outcome-based structure (its six Functions and 106 subcategories) with no certificate at the end; ISO 27001 requires you to build and run a management system (an ISMS) and pass an external audit. Choose NIST CSF to assess and mature your posture on your own terms, and ISO 27001 when a customer, contract, or market expects a certificate to prove it.
HIPAA vs GDPR
HIPAA is a U.S. sectoral law that protects health information (PHI/ePHI) held by healthcare providers, health plans, healthcare clearinghouses, and their business associates; GDPR is an EU regulation that protects all personal data of people in the EU/EEA, regardless of industry. Neither is a certification you can buy or earn — both are legal obligations enforced by regulators (the HHS Office for Civil Rights for HIPAA, national Data Protection Authorities for GDPR). For most organizations it is not an either/or choice: your geography and the type of data you handle decide which applies, and a U.S. health-tech company with EU patients can owe both.
ISO/IEC 42001 vs EU AI Act
These are not alternatives — one is a standard and the other is a law. ISO/IEC 42001:2023 is a voluntary, internationally certifiable management-system standard for governing AI responsibly; the EU AI Act (Regulation (EU) 2024/1689) is binding legislation you must comply with if your AI systems are placed on, or used within, the EU market. The honest answer to "which do I need" is usually both, for different reasons: the Act sets legal obligations you cannot opt out of, while ISO 42001 gives you a certifiable operating model many organizations use as the backbone for meeting them. Crucially, an ISO 42001 certificate does not equal EU AI Act compliance — high-risk systems still require a separate conformity assessment under the law.