ISO 27001 Certification for B2B SaaS: The Complete Resource
Every guide a SaaS team needs to scope an ISMS, complete the risk assessment, write the SoA, and pass Stage 1 and Stage 2 audits under ISO/IEC 27001:2022. Curated by the CertifyOps compliance delivery team.
TL;DR
- ISO 27001 is an international certification (not attestation). Current version: ISO/IEC 27001:2022.
- Annex A 2022 has 93 controls across 4 themes: Organizational, People, Physical, Technological.
- Timeline 4–6 months for B2B SaaS. Three-year cycle: initial audit + 2 surveillance audits + recertification.
- 70–80% of controls overlap with SOC 2 — plan both within one audit cycle to save cost.
Fundamentals
What Is ISO 27001? Complete Certification Guide
The 2022 update, Annex A structure, and what certification actually proves.
Read guide →ISO 27001 for B2B SaaS: ISMS Reality
How to scope and run an ISMS that survives a growing engineering team.
Read guide →SOC 2 vs ISO 27001: Which Framework First
Decision framework for teams choosing between North American and international standards.
Read guide →Implementation Artifacts
ISO 27001 Risk Assessment Guide
Practical methodology: asset register, threats, likelihood, impact, and treatment.
Read guide →ISO 27001 Statement of Applicability: How to Write
Step-by-step SoA creation with justification language auditors accept.
Read guide →Audit Readiness Checklist (reusable for ISO 27001)
Week-by-week plan. Most tasks map cleanly to ISO 27001 Annex A.
Read guide →Controls & Operations
Vendor Risk (A.5.19–A.5.23)
Build supplier management that satisfies A.5.19 through A.5.23 and procurement.
Read guide →Penetration Testing for ISO 27001
How pentests feed Annex A.8 technical controls and surveillance audits.
Read guide →Continuous Compliance Monitoring
Automations that keep your ISMS green between surveillance audits.
Read guide →Comparisons & Cost
NIST vs ISO 27001 vs SOC 2
Three-way framework comparison for US, EU, and federal markets.
Read guide →Compliance Cost Breakdown
True total cost including audit, tooling, and labor across all three frameworks.
Read guide →Vanta vs Drata vs Secureframe
Which GRC platforms support ISO 27001 well (and which fake it).
Read guide →Frequently asked questions
- What is ISO 27001?
- ISO/IEC 27001 is an international standard for Information Security Management Systems (ISMS). Unlike SOC 2, it is a certification issued by an accredited certification body after a two-stage audit. The current version is ISO/IEC 27001:2022, which reorganized Annex A into four themes with 93 controls.
- How long does ISO 27001 certification take?
- For most B2B SaaS, 4 to 6 months from kickoff to Stage 2 audit. Add 2 to 4 weeks for certificate issuance after a clean Stage 2. Companies moving from SOC 2 to ISO 27001 often certify in 3 to 4 months because most controls overlap.
- How much does ISO 27001 cost?
- Certification body fees typically $20,000 to $45,000 for the initial audit cycle. Add GRC tooling ($10,000 to $35,000/year), internal or consulting labor ($30,000 to $120,000), and surveillance audit fees (~30 percent of initial each year for years 2 and 3).
- ISO 27001 vs SOC 2 for SaaS?
- SOC 2 dominates North American enterprise procurement. ISO 27001 is required in EU enterprise and APAC markets. Many B2B SaaS companies achieve both — start with the one your deals require, then add the second within the same audit cycle since 70 to 80 percent of controls overlap.
- Is ISO 27001 a certification or an attestation?
- ISO 27001 is a true certification. An accredited certification body issues a certificate valid for three years with annual surveillance audits. SOC 2 is an attestation report issued by a CPA firm, typically valid for 12 months.
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