ISO 27001 vs SOC 2

Certificate versus report

ISO/IEC 27001 and SOC 2 both tell customers something about an organization's security, but they come from different worlds. ISO/IEC 27001 is an international standard for a management system, and an accredited certification body issues a certificate that says the system conforms. SOC 2 is an attestation framework from the American Institute of Certified Public Accountants (AICPA), and a licensed CPA firm issues a report giving its opinion on a service organization's controls. One is a pass or fail certificate. The other is a detailed report.

What each one examines

An ISO 27001 audit checks the management system, meaning risk assessment, leadership, internal audit, and improvement, along with how the selected Annex A controls are applied. A SOC 2 examination is built around the AICPA trust services criteria for security, availability, processing integrity, confidentiality, and privacy. Security is always included. The others are chosen based on what the service promises its customers.

SOC 2 comes in 2 forms. A Type 1 report covers whether controls were suitably designed at a point in time, and a Type 2 report also tests whether they operated effectively over a period, often 6 to 12 months. Most buyers ask for Type 2.

Outputs and who sees them

An ISO 27001 certificate is a short document that can be posted publicly and checked in IAF CertSearch. Customers who want more detail usually ask for the Statement of Applicability, which some organizations share under a non-disclosure agreement.

A SOC 2 report is long. It includes management's description of the system, the auditor's opinion, the controls, the tests performed, and any exceptions the auditor found during the period. Distribution is normally limited to customers and prospects under a non-disclosure agreement. The AICPA's SOC 3 report offers a shorter general-use version.

Cycles and cost drivers

ISO 27001 runs on a 3-year certification cycle with surveillance audits in between. SOC 2 Type 2 reports cover a set period and are usually renewed each year, so customers expect a fresh report without large gaps between periods. Neither is a one-time event. Both require evidence gathered all year, and both get easier when controls are automated and documented once. Cost depends mostly on scope, the number of locations and systems, and, for SOC 2, how many trust services criteria categories are included and how long the testing period runs.

Which one Canadian organizations choose

Canadian software and service companies that sell into the United States are often asked for SOC 2, while buyers in Europe, Asia, and much of the public sector tend to ask for ISO 27001. Both are common. Canadian CPA firms commonly perform SOC 2 examinations, and SCC-accredited certification bodies perform ISO 27001 audits. Guidance from the Canadian Centre for Cyber Security on cloud risk names both as examples of independent assurance a cloud provider may offer.

The control sets overlap heavily. Many organizations build 1 control framework, map it to both Annex A and the trust services criteria, and schedule the audits so evidence can be reused. Neither one replaces the other in a contract that names a specific report, so the deciding factor is usually what customers write into their agreements.

References

1. SOC 2 examinations, AICPA and CIMA
2. ISO/IEC 27001:2022 Information security management systems, ISO
3. Cloud security risk management (ITSM.50.062), Canadian Centre for Cyber Security

General information, reviewed 2026-10-11. Not legal advice.