Compare 13 ISO/IEC 27017 implementation partners delivering cloud-specific security controls for organisations operating on AWS, Azure, Google Cloud, Oracle Cloud, IBM Cloud, and Alibaba Cloud, extending the ISO 27001 information security management system to cloud-shared-responsibility scenarios. Engagements cover the gap assessment against the 37 cloud-specific control extensions and seven cloud-only controls beyond ISO 27001 Annex A, the cloud customer and cloud service provider responsibility matrix, the contractual security clause review for cloud service agreements, the segregation in virtual computing environments, the administrator operational security model, the monitoring of cloud services, the alignment with cloud service provider attestations (AWS SOC, Azure SOC, GCP SOC), the internal audit programme, and the certification readiness with an accredited certification body. Listings cover Big Four cloud security practices, ISO certification bodies and registrars, cloud security boutiques, India-heritage SIs, and hyperscaler partner consultancies. No partner pays for placement on this directory.
ISO 27017 programmes break into four workstreams. Scope and responsibility matrix, where the partner identifies the in-scope cloud services across AWS, Azure, GCP, OCI, IBM Cloud, and Alibaba Cloud, builds the shared responsibility matrix mapping each Annex A control and each ISO 27017 cloud-specific control to cloud customer or cloud service provider, validates the responsibility split against the cloud service agreement, and reconciles the matrix to the existing ISO 27001 ISMS scope. Control implementation, where the partner implements or evidences the 37 cloud-specific control extensions and the seven cloud-only controls (including segregation in virtual computing environments, administrator operational security, monitoring of cloud services, alignment of security management for virtual and physical networks, virtual machine images, virtual machine hardening, and customer use of cloud-service administrator) against the hyperscaler-native controls and configuration baselines. Provider assurance and contractual, where the partner reviews and incorporates the cloud service provider attestations (SOC 1, SOC 2, ISO 27001, ISO 27017, ISO 27018, FedRAMP), evaluates the contractual security and data-protection clauses in the cloud service agreement, and stands up the subprocessor and supplier management process. Audit and certification, where the partner runs the internal audit programme against ISO 27017, manages the registrar selection and stage 1 and stage 2 audit, and stands up the surveillance audit cadence.
Three procurement archetypes recur. ISO registrars (BSI, DNV, LRQA, TUV, Bureau Veritas) deliver the certification audit and cannot also implement the controls; buyers must select an implementation partner and a registrar separately. Big Four cloud security practices (PwC, EY, Deloitte, KPMG) lead at large enterprise programmes spanning multi-cloud, multi-region, and regulated industries, where the certification sits alongside SOC 2, ISO 27001, and ISO 27018, and the audit-firm methodology drives the programme. Cloud security boutiques (ControlCase, Schellman, A-LIGN) and India-heritage SIs (TCS, Infosys, Wipro) lead at mid-market and growth programmes where deep hyperscaler configuration work and ongoing managed compliance run are the determining factors. Friction point: ISO 27017 is an extension to ISO 27001 and does not stand alone, so the certification cost is layered on top of an existing or parallel 27001 programme. Cloud service provider attestations vary in scope and depth, and many AWS and Azure services are not in scope for the provider's 27017 attestation, leaving the cloud customer to evidence controls through hyperscaler-native configuration and third-party tooling. Buyers should audit the in-scope cloud services against the provider's attestation register before committing to the certification timeline.
For complementary research see CSPM tools, GRC platforms, compliance automation platforms, secrets management, and cloud workload protection. For adjacent services see ISO 27001 implementation, ISO 27701 implementation, CSPM services, SOC 2 implementation, AWS security services, and zero trust consulting.
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