ISO/IEC 27017:2015 is a code of practice providing cloud-specific information security controls. It extends ISO/IEC 27002 with guidance for 37 controls and adds seven unique CLD controls addressing shared responsibilities, multi-tenancy, virtual machine hardening, administrative operations, customer monitoring, asset removal, and network alignment.

Organizations use it to secure cloud services (IaaS, PaaS, SaaS) within an ISO 27001 ISMS, clarifying CSP and CSC duties to mitigate risks like misconfigurations and data leakage.

Benefits include:

• Enhanced cloud risk management and regulatory alignment (GDPR, CCPA).
• Procurement advantage via auditable evidence.
• Cost-efficient add-on to ISO 27001 (9-12 months joint audit).
• Improved operational maturity in logging, segregation, and lifecycle management.

Key aspects: dual-perspective guidance, seamless ISMS integration, non-standalone certification via ISO 27001 audits. Revision underway for 2022 alignments.

ISO/IEC 27001:2022 is the international standard for establishing, implementing, maintaining, and continually improving an Information Security Management System (ISMS). Organizations adopt it to systematically manage information risks, protect confidentiality, integrity, and availability (CIA triad) of assets.

Benefits include: competitive differentiation in tenders, regulatory compliance (e.g., GDPR, NIS2), reduced breach costs, improved resilience, and customer trust via certification. It optimizes security spend through risk-based controls.

Key aspects:

• Risk assessment and Statement of Applicability (SoA).
• Clauses 4-10 for management system (context, leadership, planning, support, operation, evaluation, improvement).
• Annex A: 93 controls in Organizational, People, Physical, Technological themes.
• PDCA cycle for continual improvement.
• Top management accountability and certification audits.

It aligns security with business strategy, applicable to all sizes/sectors.