What is the primary objective of ISO 27017?

ISO 27017 provides cloud-specific implementation guidance for 37 ISO 27002 controls plus 7 additional cloud-focused controls (CLD.6.3.1, CLD.8.1.5, CLD.9.5.1, CLD.9.5.2, CLD.12.1.5, CLD.12.4.5, CLD.13.1.4). Published in 2015, it addresses shared responsibilities between cloud service providers (CSPs) and cloud service customers (CSCs), covering multi-tenancy segregation, virtual machine hardening, asset return/termination, administrative operations security, customer monitoring, and network alignment in public, private, and hybrid clouds.

Who is legally or professionally required to comply with ISO 27017?

No organization is legally required to comply with ISO 27017, as it is a voluntary code of practice. Professionally, CSPs and CSCs with significant cloud footprints adopt it to demonstrate due diligence, especially in regulated sectors or procurement demanding cloud security assurance; ~94% of organizations use cloud services, with 61% reporting incidents, driving its use within ISO 27001 ISMS.

Does ISO 27017 require an external audit or third-party certification?

ISO 27017 does not support standalone third-party certification or external audit. It is implemented within an ISO 27001 ISMS, where auditors assess its 37 extended controls and 7 CLD controls during ISO 27001 Stage 1/2 audits; certification bodies may reference ISO 27017 conformity as an extension on the ISO 27001 certificate.

How often should an assessment for ISO 27017 be performed?

ISO 27017 assessments occur as part of annual ISO 27001 surveillance audits and triennial re-certification. Controls are continuously monitored via risk assessments, with formal reviews triggered by significant changes (e.g., new cloud services); aligns with ISO 27001's ongoing ISMS evaluation requirements.

What are the consequences of non-compliance with ISO 27017?

Non-compliance with ISO 27017 carries no direct legal penalties, as it is non-mandatory. Indirect consequences include failed ISO 27001 audits, lost procurement opportunities (e.g., RFPs requiring cloud controls), heightened breach risk from unaddressed multi-tenancy or shared responsibility gaps, and regulatory scrutiny under data protection laws for inadequate cloud security.

Can ISO 27017 be mapped to other international frameworks?

Yes, ISO 27017 maps directly to ISO 27001/27002 controls and aligns with frameworks like NIST SP 800-53 and CSA STAR via its 37 extended and 7 CLD controls. 70% of CSPs map it for cross-compliance; supports shared responsibility clarity in FedRAMP or PCI-DSS cloud scenarios through control correlation matrices.

What is the first step to begin implementing ISO 27017?

Conduct a cloud-specific risk assessment within your ISO 27001 ISMS scope. Identify cloud risks (e.g., multi-tenancy, asset lifecycle), map to 37 ISO 27002 controls with ISO 27017 guidance, select the 7 CLD controls, and update the Statement of Applicability to delineate CSP/CSC responsibilities.

What is the primary objective of ISO 22301?

ISO 22301 specifies requirements for establishing, implementing, maintaining, and continually improving a Business Continuity Management System (BCMS). It enables organizations to protect against, reduce the likelihood of, and recover from disruptive incidents while ensuring continuity of critical products and services. The standard follows a PDCA (Plan-Do-Check-Act) cycle across 10 clauses, with Clauses 4-10 focusing on context, leadership, planning (including BIA and risk assessment), operations, evaluation, and improvement.

Who is legally or professionally required to comply with ISO 22301?

ISO 22301 applies to organizations of all sizes and sectors seeking resilience, with heightened professional relevance in critical sectors like utilities, transport, health, finance, and IT. It is not universally mandatory but supports regulatory compliance, such as EU NIS Regulations for essential services. Certified organizations gain advantages in procurement, insurance reductions, and stakeholder trust, driven by annual disruptions affecting 1 in 5 entities.

Does ISO 22301 require an external audit or third-party certification?

ISO 22301 certification requires a two-stage external audit by an accredited body, valid for 3 years with annual surveillance audits. Stage 1 assesses readiness; Stage 2 verifies effectiveness, typically taking 6-8 weeks. Internal audits (Clause 9.2) precede this, ensuring PDCA compliance without prescriptive controls—tailored via BIA and risk assessments.

How often should an assessment for ISO 22301 be performed?

ISO 22301 mandates internal audits at planned intervals, typically annually, plus management reviews and periodic testing of BCMS elements. Clause 9 requires monitoring, measurement, and exercises (e.g., tabletops, full simulations) to verify RTOs and recovery strategies. The standard undergoes systematic review every 5 years, with certifications recertified every 3 years.

What are the consequences of non-compliance with ISO 22301?

Non-compliance with ISO 22301 exposes organizations to unmitigated disruptions, financial losses, reputational damage, and regulatory penalties in aligned frameworks like NIS. Without BCMS, 1 in 5 organizations face significant annual downtime; certified entities report reduced recovery times, lower insurance premiums, and lost procurement opportunities from inadequate resilience.

Can ISO 22301 be mapped to other international frameworks?

Yes, ISO 22301 seamlessly maps to other frameworks via its Annex SL high-level structure. It aligns with standards sharing PDCA and clauses (e.g., for risk and security), enabling integrated management systems with bundled discounts like CHF 298 for ISO 22301 + ISO 22313.

What is the first step to begin implementing ISO 22301?

The first step is conducting a gap analysis against Clauses 4-10, starting with Clause 4: understanding organizational context, internal/external issues, and interested parties. Secure leadership commitment (Clause 5), appoint a BCMS manager, and initiate BIA to scope critical functions, followed by risk assessment.

Standards Comparison

ISO 27017 vs ISO 22301

ISO 27017

Voluntary

2015

Code of practice for cloud information security controls

ISO 22301

Voluntary

2019

International standard for business continuity management systems.

Quick Verdict

ISO 27017 provides cloud-specific security guidance within ISO 27001 ISMS for CSPs and customers, while ISO 22301 establishes certifiable BCMS for operational resilience across sectors. Companies adopt them for cloud risk management and disruption recovery.

Cloud Security

ISO 27017

ISO/IEC 27017:2015 cloud security controls

Cost

€€€

Complexity

Medium

Implementation Time

6-12 months

Key Features

Introduces 7 cloud-specific controls for multi-tenancy segregation
Clarifies shared responsibilities between CSPs and CSCs
Provides guidance for 37 ISO 27002 controls in cloud
Addresses virtual machine hardening and configuration management
Enables customer monitoring of cloud service activities

Business Continuity

ISO 22301

ISO 22301:2019 Business continuity management systems Requirements

Cost

€€€

Complexity

Medium

Implementation Time

0-6 months

Key Features

PDCA cycle for continual BCMS improvement
Business Impact Analysis (BIA) and risk assessment
Leadership commitment with policy and roles
Operational testing and recovery strategies
Integration with ISO 27001 and other standards

Detailed Analysis

A comprehensive look at the specific requirements, scope, and impact of each standard.

ISO 27017 Details

What It Is

ISO/IEC 27017:2015 is a code of practice extending ISO/IEC 27002 with cloud-specific information security controls. It provides implementation guidance for cloud services across IaaS, PaaS, and SaaS, focusing on shared responsibilities in multi-tenant environments. Its risk-based approach integrates into ISO 27001 ISMS.

Key Components

Guidance on 37 ISO 27002 controls adapted for cloud.
7 additional CLD controls (e.g., segregation, VM hardening, asset removal).
Dual perspectives for CSPs and CSCs.
Assessed within ISO 27001 audits, no standalone certification.

Why Organizations Use It

Enhances cloud risk management, clarifies responsibilities, supports GDPR/CCPA alignment, boosts procurement trust, and differentiates CSPs. Builds stakeholder confidence through auditable cloud controls.

Implementation Overview

Integrate via ISO 27001 risk assessment, map controls, configure cloud environments. Suited for CSPs, CSCs of all sizes; joint audits take 9-12 months. Focuses on maturity in monitoring, segregation.

ISO 22301 Details

What It Is

ISO 22301:2019 is the international certification standard for Business Continuity Management Systems (BCMS). It specifies requirements to protect against, reduce likelihood of, respond to, and recover from disruptions, ensuring continuity of critical operations. Adopting a risk-based PDCA (Plan-Do-Check-Act) cycle and Annex SL high-level structure, it enables flexible implementation across organizations.

Key Components

10 clauses (4-10 auditable): context of organization, leadership, planning (BIA, risk assessment), support, operation (strategies, testing), performance evaluation (audits, reviews), improvement.
Core principles: Business Impact Analysis (BIA), Recovery Time Objectives (RTO), continual enhancement.
3-year certification with annual surveillance audits.

Why Organizations Use It

Builds resilience against cyber threats, pandemics, disasters; minimizes downtime, financial losses.
Ensures regulatory compliance (e.g., NIS Directive, NIST); enhances reputation, stakeholder trust.
Provides competitive advantages, lower insurance premiums, procurement edges.

Implementation Overview

Phased approach: gap analysis, leadership buy-in, BIA/risk assessment, documentation, training, testing, certification (6-8 weeks Stage 1/2).
Suits all sizes/sectors globally; tools accelerate to 60 days-6 months.

Key Differences

Aspect	ISO 27017	ISO 22301
Scope	Cloud-specific security controls	Business continuity management system
Industry	Cloud providers and customers globally	All sectors worldwide
Nature	Guidance code of practice	Certifiable management system standard
Testing	Integrated into ISO 27001 audits	BCMS exercises and audits required
Penalties	Loss of certification	No legal penalties

Scope

ISO 27017

Cloud-specific security controls

ISO 22301

Business continuity management system

Industry

ISO 27017

Cloud providers and customers globally

ISO 22301

All sectors worldwide

Nature

ISO 27017

Guidance code of practice

ISO 22301

Certifiable management system standard

Testing

ISO 27017

Integrated into ISO 27001 audits

ISO 22301

BCMS exercises and audits required

Penalties

ISO 27017

Loss of certification

ISO 22301

No legal penalties

Frequently Asked Questions

Common questions about ISO 27017 and ISO 22301

ISO 27017 FAQ

ISO 22301 FAQ

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What It Is

Key Components

10 clauses (4-10 auditable): context of organization, leadership, planning (BIA, risk assessment), support, operation (strategies, testing), performance evaluation (audits, reviews), improvement.

Core principles: Business Impact Analysis (BIA), Recovery Time Objectives (RTO), continual enhancement.

3-year certification with annual surveillance audits.

Aspect

ISO 27017

ISO 22301

Scope

Cloud-specific security controls

Business continuity management system

Industry

Cloud providers and customers globally

All sectors worldwide

Nature

Guidance code of practice

Certifiable management system standard

Testing

Integrated into ISO 27001 audits

BCMS exercises and audits required

Penalties

Loss of certification

No legal penalties