FAQGlobalISO/IEC 27017

ISO/IEC 27017 FAQ

Use these answers to allocate cloud-security duties, set agreement terms, and test the evidence for each service.

This page explains , which ISO lists as withdrawn and replaced by ISO/IEC 27017:2026. Confirm the edition required by your contract or assessment before applying the 2015 control references.

Author
Sorena AI
Published
May 9, 2026
Updated
Oct 15, 2026
5 sections7 primary sources8 FAQ modules
Overview

answers recurring cloud-security decisions about provider/customer responsibility, service agreements, privileged administration, virtualization, logging and monitoring, provider evidence, customer controls, audit access, and certification claims.

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These focused FAQ modules break this artifact into narrower answer sets so teams can move straight to the right source-backed guidance.

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Focused FAQ modules
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FAQ module

ISO/IEC 27017 Audit Rights FAQ

ISO/IEC 27017 does not grant unrestricted cloud-provider audits. Define the contract route for independent assurance, supporting access, exceptions, and escalation.

4 items
FAQ module

ISO/IEC 27017 Cloud Admin Access FAQ

Apply ISO/IEC 27017 to customer and provider cloud administrators: strong authentication, limited privileges, logged operations, supervised critical work, and review evidence.

4 items
FAQ module

ISO/IEC 27017 Cloud Service Agreements FAQ

Use ISO/IEC 27017 to define cloud security roles, provider measures, evidence, incident handling, supplier dependencies, and exit terms in the service agreement.

4 items
FAQ module

ISO/IEC 27017 Customer Controls FAQ

Identify the cloud controls the customer should assess, configure, operate, monitor, evidence, and review when provider controls do not meet every security requirement.

4 items
FAQ module

ISO/IEC 27017 Logging FAQ

Allocate cloud event logging and monitoring between provider and customer, verify accessible events, privileged operations, timestamps, retention, alerts, and evidence.

4 items
FAQ module

ISO/IEC 27017 Provider Evidence FAQ

Check whether a cloud provider's certificate, audit report, or self-assessment supports its claims for the entity, service, location, controls, and period in scope.

4 items
FAQ module

ISO/IEC 27017 Shared Responsibility FAQ

Allocate ISO/IEC 27017 cloud-security roles to named provider, customer, and upstream parties for one service, then document, communicate, implement, and review the split.

4 items
FAQ module

ISO/IEC 27017 Virtualization Responsibilities FAQ

Allocate tenant isolation, virtual-machine hardening, administrative operations, images, snapshots, and virtual-network policy under ISO/IEC 27017.

4 items
Question 1

What does ISO/IEC 27017:2015 require teams to decide?

is a code of practice for cloud service customers and providers. It adds cloud-specific implementation guidance to ISO/IEC 27002:2013 and seven cloud controls. It is not a law or a standalone management-system requirements standard.

Start with one named service and identify whether the organization is acting as the , the provider, or both in a supply chain. Then allocate each security activity to an identified party. The split can change across SaaS, PaaS, IaaS, managed services, provider chains, and negotiated terms.

Record the result in the agreement, responsibility matrix, configuration, operating procedure, or evidence request that controls the work. Assess applicable law, regulation, sector rules, and contract requirements separately; ISO/IEC 27017 says control selection depends on risk and those external requirements.

  • Shared roles: identify provider, customer, and shared steps and put both sides' responsibilities in the agreement.
  • Asset removal: specify which customer assets are returned or removed, deletion of copies, and the termination schedule.
  • Virtualization: test tenant segregation, virtual-machine hardening, and alignment between virtual and physical network policy.
  • Operations: document and monitor critical administrative operations, including provisioning, deletion, backup, restoration, and termination.
  • Monitoring: give the customer access to relevant information about its own service instances and protect that access.
  • Decision record: name the owner, evidence, exception, approval, scheduled review, and change triggers.
Question 2

Which records make an ISO/IEC 27017 answer reviewable?

Collect evidence from the system or process that performs the control. For ISO/IEC 27017, that can include the signed service agreement, a service-specific responsibility matrix, provider assurance material, customer configuration exports, privileged-operation logs, monitoring tests, incident records, and termination tests.

Each record should identify the service, customer and provider entities, service model, regions, control boundary, period, owner, exceptions, and follow-up. A certificate or provider report supports only the entities, services, locations, controls, and period within its scope; it does not prove the customer's configuration. Where individual customer audits are impractical or could increase risk, the provider should offer sufficiently transparent independent evidence; if independent audit is impractical, the 2015 guidance calls for a disclosed self-assessment.

  • Artifact-specific evidence: shared-responsibility matrix, cloud service agreement, provider assurance, customer configuration evidence, access reviews, logs, and change records.
  • Decision record: scope, assumption, risk or obligation, owner, approval, and date.
  • Operation record: ticket, log, review, test, contract clause, register entry, or control sample showing the process ran.
  • Review record: result, exception, corrective action, next owner, and next review date.
Question 3

How should teams apply an ISO/IEC 27017 answer?

Use the same sequence for each question: define the service and provider chain, identify the customer and provider guidance, map the risk and external requirements, allocate the work, confirm both sides can perform it, and attach operating evidence.

If the service offers only fixed controls, compare them with the customer's requirements and add customer controls or record risk treatment for gaps. For example, a SaaS provider may operate the application and platform while the customer still manages user access, sharing settings, data use, and its response to alerts. Route unresolved contract, evidence, configuration, or supplier-chain gaps to someone authorized to accept the risk or fund correction.

  • Intake: identify the cloud service, service model, provider chain, customer owner, data, workloads, regions, agreement, and control boundary.
  • Classification: decide whether the issue concerns scope, risk treatment, contract, provider evidence, customer configuration, access, monitoring, incident response, continuity, privacy, or exit.
  • Escalation: route exceptions to the person or forum that can accept risk or fund remediation.
Question 4

What mistakes weaken an ISO/IEC 27017 decision?

A provider's generic responsibility diagram, certificate, or policy title is not enough. Tie each decision to a service boundary, accountable owner, evidence source, change trigger, and escalation path. Those five fields are implementation aids, not extra ISO controls.

Do not treat the standard as law, assume a provider certificate covers the customer's use, or cite ISO/IEC 27002:2022 as the normative base of the 2015 edition. references ISO/IEC 27002:2013; organizations may map newer control sets, but should document that mapping. Do not call ISO/IEC 27017 a standalone management-system certification: ISO/IEC 27001 supplies the certifiable ISMS requirements, and ISO itself does not issue certificates.

  • Do not cite a standard title as evidence that a process is operating.
  • Do not reuse an old audit artifact after the scope, service, supplier, or risk has changed.
  • Do not hide exceptions; record them as risk acceptance, corrective action, or management-review inputs.
Question 5

When should teams review these ISO/IEC 27017 answers?

Review before selecting a service and when the service model, provider chain, architecture, data location, agreement, control boundary, assurance report, or customer commitment changes. Also confirm the applicable edition when a contract, certification basis, or standards owner changes.

Update every downstream record that depends on the decision, including the agreement, responsibility matrix, control configuration, risk treatment, evidence request, and next review date. Keep unresolved items visible as corrective action or accepted risk. ISO now lists as withdrawn and ISO/IEC 27017:2026 as its replacement. Review the adopted replacement text before changing the 2015 identifiers in these answers.

  • Set a review date and a change-trigger rule.
  • Track findings until closure and connect them to corrective actions or risk acceptance.
  • Use management review to decide resourcing, risk appetite, scope changes, and evidence quality.
Primary sources

References and citations

iso.org2 citations
Referenced sections
  • Primary ISO listing for cloud-service security control guidance.
  • ISO identifies the 2015 edition as guidance for both cloud service providers and customers, based on ISO/IEC 27002, and currently marks it published but due for revision.
"Code of practice for information security controls based on ISO/IEC 27002 for cloud services"
handle.itu.int2 citations
Referenced sections
  • Clause 18.2.1 supports service-specific documented evidence, independent audit evidence where customer audits are impractical, and disclosed self-assessment where independent audit is impractical.
  • Clauses 4.3, 6.1.1, 8.1.2, and 12.4.1 support comparing preset service capabilities with customer requirements and assigning service-model-dependent access, application, logging, and monitoring work.
iso.org
Referenced sections
  • ISO explains that it develops standards but does not issue certificates; external certification bodies perform certification.
iso.org
Referenced sections
  • Primary ISO listing for the current ISO/IEC 27001 ISMS requirements standard.
"Information security, cybersecurity and privacy protection — Information security management systems — Requirements"
iso.org
Referenced sections
  • Primary ISO listing for the ISO/IEC 27002 information security control guidance standard.
"Information security controls"
itu.int
Referenced sections
  • ITU records the identical July 2015 recommendation as superseded and the December 2025 successor as in force (prepublished), so adopters should confirm which edition their assurance basis requires.
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