Topic starter
07/06/2026 9:09 pm
TL;DR: ISO 27001 is the certifiable ISMS standard, ISO 27002 expands Annex A into control guidance, and ISO 27003 explains how to plan and design an ISMS, according to StrongDM. The practical issue is not choosing one standard over another, but aligning certification, control selection, and implementation planning into a single governance path.
Editorial analysis by NHI Mgmt Group, based on content published by StrongDM: “ISO 27001 vs. 27002 vs. 27003: What’s the Difference?”.
Key questions
Q: How should IAM teams use ISO 27001 and ISO 27002 together?
A: Use ISO 27001 to define the management system, risk scope, and accountability model, then use ISO 27002 to implement the controls that support those decisions.
Q: What is the difference between ISO/IEC 27001 and ISO/IEC 27002?
A: ISO/IEC 27001 is the certifiable management system standard that sets requirements for how an organization governs information security.
Q: When should organisations use ISO 27003 during an ISMS programme?
A: Use ISO 27003 at the beginning of the ISMS journey, when the team needs to define the implementation project, secure management approval and sequence the work.
Practitioner guidance
- Define the ISO 27001 scope first Set the ISMS boundary, governance owners and certification objectives before choosing supporting controls or drafting implementation workstreams.
- Map selected controls to ISO 27002 Use ISO 27002 to turn the controls you selected from ISO 27001 into concrete operational guidance for access control, supplier oversight and incident handling.
- Use ISO 27003 for programme sequencing Build the ISMS project plan around management approval, implementation phases and evidence requirements so the programme has a clear delivery path.
Bottom line: ISO 27001, ISO 27002 and ISO 27003 play different roles in an ISMS, and confusing them weakens both certification readiness and day-to-day governance.
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This topic was modified 4 days ago by NHI Mgmt Group
08/06/2026 8:58 am
ISO 27001, 27002 and 27003 are governance layers, not interchangeable standards. ISO 27001 defines the certifiable management system, ISO 27002 interprets control selection, and ISO 27003 frames implementation planning. Teams that collapse those roles usually end up with either a certification project that lacks operational depth or a control programme that lacks governance discipline. The practical conclusion is to separate certification scope, control design and programme planning from the start.
A question worth separating out:
Q: Why does ISO 27001 matter for access governance and identity teams?
A: Because the standard tests whether access decisions are controlled, justified, and provable over time. That makes it directly relevant to human IAM, NHI governance, supplier access, and privileged access management. If a team cannot demonstrate who has access, why they have it, and how it is reviewed, certification becomes fragile.
👉 Read our full editorial: ISO 27001, 27002 and 27003: what each standard does
This post was modified 4 days ago by NHI Mgmt Group