ISO 22301 vs ISO 27018
ISO 22301
International standard for business continuity management systems
ISO 27018
International standard for PII protection in public clouds.
Quick Verdict
ISO 22301 builds business continuity resilience against disruptions for all organizations, while ISO 27018 extends ISO 27001 with cloud PII privacy controls for service providers. Companies adopt them for certification, compliance, risk reduction, and competitive trust.
ISO 22301
ISO 22301:2019 Business continuity management systems — Requirements
Key Features
- PDCA cycle for continual BCMS improvement
- Mandatory Business Impact Analysis (BIA)
- Risk assessment and recovery strategies
- Annex SL structure for standards integration
- Three-year certification with surveillance audits
ISO 27018
ISO/IEC 27018:2019 Code of practice for PII in public clouds
Key Features
- Privacy controls for PII processors in public clouds
- Subprocessor transparency and location disclosures
- Prohibits PII use for marketing without consent
- Mandates customer breach notifications
- Supports data minimization and secure deletion
Detailed Analysis
A comprehensive look at the specific requirements, scope, and impact of each standard.
ISO 22301 Details
What It Is
ISO 22301:2019 is the international standard specifying requirements for a Business Continuity Management System (BCMS). It enables organizations to protect against, reduce the likelihood of, and recover from disruptive incidents. Adopting a risk-based approach via the PDCA (Plan-Do-Check-Act) cycle and Annex SL high-level structure, it ensures resilience for critical operations.
Key Components
- 10 clauses (4-10 core): context, leadership, planning (BIA, risk assessment), support, operation (recovery strategies, testing), evaluation (audits, reviews), improvement.
- Flexible, non-prescriptive requirements tailored to context.
- Key terms: RTO, MTPD, BCMS.
- Certification model: external audits, 3-year validity, annual surveillance.
Why Organizations Use It
- Builds operational resilience, minimizes downtime and losses.
- Meets regulatory demands (e.g., NIS Directive, NIST).
- Enhances risk management, stakeholder trust, reputation.
- Provides competitive edges like procurement advantages, lower insurance.
- Integrates seamlessly with ISO 27001, ISO 31000.
Implementation Overview
- Gap analysis, BIA, training, testing, audits.
- Phased: 0-6 months with tools/software.
- Applicable to all sizes/sectors globally.
- Two-stage certification process (readiness, effectiveness).
ISO 27018 Details
What It Is
ISO/IEC 27018 is a code of practice extending ISO/IEC 27001 and ISO/IEC 27002 specifically for protecting personally identifiable information (PII) processed by public cloud service providers acting as PII processors. Published in editions including 2014 and the latest 2019, it focuses on cloud-specific privacy risks using a risk-based approach within an Information Security Management System (ISMS).
Key Components
- ~25–30 additional privacy-specific controls mapped to ISO 27001 Annex A
- Core principles: consent/choice, purpose limitation, data minimization, accuracy, transparency, accountability
- Emphasizes subprocessor management, breach notification, data subject rights support
- Integrated into ISO 27001 audits; no standalone certification
Why Organizations Use It
- Builds customer trust and accelerates procurement via Statement of Applicability
- Aligns with GDPR Article 28, HIPAA for processor obligations
- Enhances risk transfer, cyber insurance, market differentiation for CSPs
- Demonstrates privacy stewardship in multi-tenant clouds
Implementation Overview
- Gap analysis on existing ISMS, integrate controls into SoA
- Key activities: policy updates, training, technical safeguards like encryption/logging
- Suited for CSPs all sizes; incremental if ISO 27001-certified
- Third-party audits during ISO 27001 cycle (annual surveillance, 3-year recertification)
Key Differences
| Aspect | ISO 22301 | ISO 27018 |
|---|---|---|
| Scope | Business continuity management systems (BCMS) | PII protection in public cloud services |
| Industry | All sectors, sizes, global applicability | Cloud service providers, privacy-focused |
| Nature | Certifiable management system standard | Code of practice extending ISO 27001 |
| Testing | BIA, exercises, audits every 3 years | Integrated ISO 27001 audits, surveillance |
| Penalties | Loss of certification, no legal fines | Loss of certification, no legal fines |
Scope
Industry
Nature
Testing
Penalties
Frequently Asked Questions
Common questions about ISO 22301 and ISO 27018
ISO 22301 FAQ
ISO 27018 FAQ
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