What is the primary objective of **ISO 37301**?

**ISO 37301 specifies requirements for establishing, implementing, maintaining, and improving an effective **Compliance Management System (CMS)**.** Published on 13 April 2021, it replaces the guidance-only ISO 19600 by introducing certifiable 'shall' requirements, following the **High-Level Structure (HLS)** and **Plan-Do-Check-Act (PDCA)** cycle to systematically identify **compliance obligations**, assess **compliance risks**, and foster a culture of integrity.

Who is legally or professionally required to comply with **ISO 37301**?

**No organization is legally required to comply with ISO 37301, as it is a voluntary, certifiable standard applicable to all sizes and sectors.** It is professionally adopted by organizations seeking third-party validation of their CMS, particularly in regulated industries facing **compliance obligations** from legal, regulatory, contractual, or voluntary sources, with top management accountable for effectiveness.

Does **ISO 37301** require an external audit or third-party certification?

**ISO 37301 does not require external audit or third-party certification, but enables it through accredited certification bodies such as those under ANAB.** Certification involves initial conformity assessment followed by surveillance audits in a typical three-year cycle, providing evidence of CMS alignment with HLS clauses like leadership, risk planning, and performance evaluation.

How often should an assessment for **ISO 37301** be performed?

**ISO 37301 requires continual assessment through ongoing monitoring, measurement, internal audits, and periodic management reviews by top management.** Internal audits are planned based on risk and importance, while certification involves surveillance audits typically annually within a three-year cycle; continual improvement addresses nonconformities via root-cause analysis.

What are the consequences of non-compliance with **ISO 37301**?

**Non-compliance with ISO 37301 itself carries no direct penalties, as it is voluntary, but results in certification withdrawal if certified.** Organizational consequences include heightened exposure to regulatory fines, litigation, reputational damage, and loss of stakeholder trust from unmanaged **compliance risks** and inadequate CMS performance.

Can **ISO 37301** be mapped to other international frameworks?

**Yes, ISO 37301 uses the High-Level Structure (HLS) for seamless mapping and integration with other ISO management system standards.** Its PDCA cycle, risk-based planning, and clauses on leadership, support, operation, evaluation, and improvement enable combined audits and **Integrated Management Systems (IMS)** without referencing specific other frameworks.

What is the first step to begin implementing **ISO 37301**?

**The first step is to determine the context of the organization, identifying internal/external issues, interested parties, and the CMS scope.** Secure top management commitment, then inventory **compliance obligations** into a centralized register and conduct a risk assessment to prioritize material risks per the standard's planning requirements.

What is the primary objective of **ISO 27018**?

**ISO 27018 provides a code of practice for protecting **Personally Identifiable Information (PII)** in public clouds where the provider acts as a PII processor.** It extends **ISO 27001** and **ISO 27002** with ~25–30 privacy-specific controls addressing cloud risks like multi-tenancy, subprocessor transparency, consent, purpose limitation, data minimization, breach notification, and restrictions on secondary PII use (e.g., no advertising without consent). The 2025 edition aligns with **ISO 27002:2022**, emphasizing transparency, data subject rights support, and secure PII lifecycle management.

Who is legally or professionally required to comply with **ISO 27018**?

**ISO 27018 targets public cloud service providers (CSPs) acting as PII processors for customers.** It applies to hyperscalers, regional platforms, and sector-specific clouds (e.g., healthcare, finance) processing PII via multi-tenant environments. Controllers use it for vendor due diligence, but compliance is not legally mandated—it's a professional best practice for demonstrating processor obligations under privacy laws like GDPR Article 28. No employee/revenue thresholds exist; applicability is role-based on PII processing in public clouds.

Does **ISO 27018** require an external audit or third-party certification?

**ISO 27018 does not offer standalone certification; controls are assessed via external **ISO 27001** audits by accredited bodies under **ISO/IEC 17021** and **ISO/IEC 27006*.** Auditors review **ISO 27018** implementation in the **Statement of Applicability (SoA)** during Stage 1 (documentation) and Stage 2 (effectiveness) audits. Certificates reference both standards, valid for 3 years with annual surveillance.

How often should an assessment for **ISO 27018** be performed?

**ISO 27018 assessments occur through annual surveillance audits and full recertification every 3 years as part of the **ISO 27001** cycle.** Internal risk assessments and gap analyses should be conducted continually, with updates to the **SoA** for new services, subprocessors, or regulations. CSPs like Microsoft perform annual third-party audits covering **ISO 27018** controls.

What are the consequences of non-compliance with **ISO 27018**?

**Non-compliance with ISO 27018 risks loss of market trust, procurement delays, and failure to meet processor obligations under laws like GDPR, but imposes no direct penalties as it is a voluntary code of practice.** CSPs face rejected contracts, cyber insurance issues, and legal liability if PII breaches occur without demonstrated controls like subprocessor disclosure or breach notification.

Can **ISO 27018** be mapped to other international frameworks?

**Yes, ISO 27018 maps closely to frameworks like **ISO 27017** (cloud security), **ISO 27701** (PIMS), **ISO 29100** (privacy framework), and OECD guidelines, plus GDPR Article 28 processor duties.** Controls align on consent, transparency, data minimization, and rights support; **ISO 27018** augments **Annex A** (93 controls) in **ISO 27001:2022** without standalone certification.

What is the first step to begin implementing **ISO 27018**?

**Conduct a gap analysis of existing **ISO 27001** ISMS against **ISO 27018** controls, focusing on PII risks, **SoA** updates, and cloud-specific gaps like subprocessor management.** Engage stakeholders for discovery, prioritize remediation (e.g., transparency policies, breach procedures), and develop a continual improvement plan.

ISO 37301 vs ISO 27018

Standards Comparison

ISO 37301

Voluntary

2021

Certifiable international standard for compliance management systems

ISO 27018

Voluntary

2019

International code for PII protection in public clouds

Quick Verdict

ISO 37301 establishes certifiable compliance management systems for all organizations, embedding risk-based integrity culture. ISO 27018 extends ISO 27001 with cloud PII privacy controls for service providers. Companies adopt them for governance assurance, stakeholder trust, and regulatory alignment.

Compliance Management

ISO 37301

ISO 37301:2021 Compliance management systems – Requirements

Cost

€€€€

Complexity

High

Implementation Time

12-18 months

Key Features

Certifiable requirements replacing guidance-only ISO 19600
High-Level Structure alignment for IMS integration
Risk-based compliance obligations and controls planning
Top management commitment and culture emphasis
Confidential whistleblowing with anti-retaliation protections

Cloud Privacy

ISO 27018

ISO/IEC 27018:2025 Code of practice for PII protection

Cost

€€€

Complexity

High

Implementation Time

6-12 months

Key Features

Privacy controls for public cloud PII processors
Subprocessor transparency and disclosure requirements
Breach notification obligations to customers
Prohibition of unauthorized PII secondary use
Support for data subject rights handling

Detailed Analysis

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

ISO 37301 Details

What It Is

ISO 37301:2021 – Compliance management systems – Requirements with guidance for use is a certifiable international standard specifying requirements for establishing, implementing, maintaining, and improving effective Compliance Management Systems (CMS). Applicable to all organization sizes and sectors, it uses a risk-based PDCA cycle and High-Level Structure (HLS) for integration.

Key Components

Leadership, risk planning, support, operations, performance evaluation, improvement.
10 HLS clauses emphasizing obligations identification, whistleblowing, competence.
Built on continual improvement; supports companion standards like ISO 37302.
Third-party certification via accredited bodies (e.g., ANAB).

Why Organizations Use It

Provides external assurance, reduces fines/reputational risks.
Meets investor/ESG demands, builds integrity culture.
Enhances stakeholder trust, integrates with ISO 9001/27001.
Drives strategic resilience amid regulatory complexity.

Implementation Overview

Phased: gap analysis, obligation register, training, audits, reviews.
Scalable for SMEs/enterprises; cultural change key.
Universal applicability; certification involves 3-year cycles.

ISO 27018 Details

What It Is

ISO/IEC 27018:2025 is a code of practice extending ISO/IEC 27001 and ISO/IEC 27002 to protect personally identifiable information (PII) processed by public cloud service providers (CSPs) acting as PII processors. It addresses cloud-specific privacy risks like multi-tenancy, subprocessors, and cross-border flows through a risk-based control framework.

Key Components

~25–30 privacy-specific controls integrated into ISO 27001 Annex A (Organizational, People, Physical, Technological themes).
Core principles: consent/choice, purpose limitation, data minimization, accuracy, security safeguards, transparency, accountability.
Assessed within ISO 27001 ISMS audits; no standalone certification.

Why Organizations Use It

Enhances trust, accelerates procurement, supports GDPR/HIPAA compliance.
Reduces questionnaire friction via Statement of Applicability; aids insurance.
Provides competitive differentiation for CSPs demonstrating privacy stewardship.

Implementation Overview

Conduct gap analysis, integrate controls into ISMS, update contracts/policies.
Applicable to CSPs all sizes with ISO 27001 base; annual audits required. (178 words)

Key Differences

Aspect	ISO 37301	ISO 27018
Scope	Compliance obligations, risks, culture across all operations	PII protection in public cloud services as processor
Industry	All sectors, sizes, global applicability	Cloud service providers, global, any sector processing PII
Nature	Certifiable management system standard, voluntary	Code of practice extending ISO 27001, voluntary
Testing	Third-party certification audits, 3-year cycle	Assessed in ISO 27001 audits, annual surveillance
Penalties	Loss of certification, no legal penalties	Loss of certification, no legal penalties

Scope

ISO 37301

Compliance obligations, risks, culture across all operations

ISO 27018

PII protection in public cloud services as processor

Industry

ISO 37301

All sectors, sizes, global applicability

ISO 27018

Cloud service providers, global, any sector processing PII

Nature

ISO 37301

Certifiable management system standard, voluntary

ISO 27018

Code of practice extending ISO 27001, voluntary

Testing

ISO 37301

Third-party certification audits, 3-year cycle

ISO 27018

Assessed in ISO 27001 audits, annual surveillance

Penalties

ISO 37301

Loss of certification, no legal penalties

ISO 27018

Loss of certification, no legal penalties

Frequently Asked Questions

Common questions about ISO 37301 and ISO 27018

ISO 37301 FAQ

ISO 27018 FAQ

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ISO 37301

ISO 27018

Quick Verdict

ISO 37301

Key Features

ISO 27018

Key Features

Detailed Analysis

ISO 37301 Details

What It Is

Key Components

Why Organizations Use It

Implementation Overview

ISO 27018 Details

What It Is

Key Components

Why Organizations Use It

Implementation Overview

Key Differences

Scope

Industry

Nature

Testing

Penalties

Frequently Asked Questions

ISO 37301 FAQ

What is the primary objective of ISO 37301?

Who is legally or professionally required to comply with ISO 37301?

Does ISO 37301 require an external audit or third-party certification?

How often should an assessment for ISO 37301 be performed?

What are the consequences of non-compliance with ISO 37301?

Can ISO 37301 be mapped to other international frameworks?

What is the first step to begin implementing ISO 37301?

ISO 27018 FAQ

What is the primary objective of ISO 27018?

Who is legally or professionally required to comply with ISO 27018?

Does ISO 27018 require an external audit or third-party certification?

How often should an assessment for ISO 27018 be performed?

What are the consequences of non-compliance with ISO 27018?

Can ISO 27018 be mapped to other international frameworks?

What is the first step to begin implementing ISO 27018?

You Might also be Interested in These Articles...

How to Implement CIS Controls v8.1 as a ‘Control Backbone’ for NIS2 & DORA (Step-by-Step Implementation Guide)

One Step at a Time - a 6 Month Plan to Live and Breath DORA

ISO 27701 Implementation Roadmap: Extending Your ISMS to PIMS in 12 Months or Less

Run Maturity Assessments with GRADUM

Check out these other Gradum.io Standards Comparison Pages

AS9120B vs APRA CPS 234

PCI DSS vs ISO 21001

CMMC vs ISA 95