ISO 27001 vs SOC 2: Which Security Certification Does Your Business Need?: A clear, practical comparison of ISO 27001 and SOC 2 for regulated businesses — what each certification covers, who requires them, the costs involved,…
HubSecure is relevant when teams need secure client records, document collection, workflow ownership, role-based access and audit-ready evidence in one governed workspace.
If your business handles sensitive client data — financial records, health information, legal documents, personal data — you will almost certainly face questions about security certifications from enterprise customers, regulators or your own board. The two most common are ISO 27001 and SOC 2.
They are often mentioned in the same breath, but they are structurally different in purpose, audience, process and outcome. This guide explains both clearly and helps you decide which is right for your situation.
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Best fit and not best fit
| Best for | Not best for |
|---|---|
| Regulated teams that need client records, secure files, workflow ownership, RBAC and audit history together. | Teams that only need a single-purpose tool and do not need governed client operations or compliance evidence. |
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What is ISO 27001?
ISO 27001 is an international standard published by the International Organization for Standardization (ISO). It specifies the requirements for establishing, implementing, maintaining and continually improving an Information Security Management System (ISMS). Certification is awarded by accredited third-party certification bodies after an audit.
ISO 27001 is globally recognised. It is the dominant security standard in Europe, the Middle East, Asia-Pacific and increasingly in the US, particularly among companies selling to government, financial services or healthcare.
Key characteristics:
- Prescriptive management system approach — you must document and implement 93 controls across 4 domains (the Annex A controls)
- Audited annually by an accredited external certification body
- Certificate is public and time-limited (three years, with annual surveillance audits)
- Globally portable — recognised in virtually all markets
- Addresses both technical and organisational/people security
What is SOC 2?
SOC 2 (System and Organisation Controls 2) is a reporting framework developed by the American Institute of Certified Public Accountants (AICPA). It is audit-based, but produces a report rather than a certificate. The report covers five Trust Service Criteria: Security, Availability, Processing Integrity, Confidentiality and Privacy — though Security is the only mandatory criterion.
There are two types:
- SOC 2 Type I — snapshot audit: assesses whether controls are designed correctly at a point in time
- SOC 2 Type II — period audit: assesses whether controls actually operated effectively over a period (typically 6–12 months)
SOC 2 Type II is the standard that enterprise customers in the US — particularly in SaaS, fintech and cloud services — typically require. Type I is faster to obtain but carries less weight.
Key differences at a glance
| Dimension | ISO 27001 | SOC 2 |
|---|---|---|
| Origin | International (ISO/IEC) | US-based (AICPA) |
| Output | Certificate | Audit report |
| Audience | Global, especially Europe + APAC | Primarily US enterprise customers |
| Scope | Entire ISMS — organisation-wide | Specific system or service |
| Timeline | 6–18 months first certification | 6–12 months for Type II |
| Cost (SME) | $15,000–$60,000 first year | $20,000–$80,000 first audit |
| Renewal | Annual surveillance + 3-year recertification | Annual re-audit for Type II |
| Prescriptiveness | High — specific controls required | Flexible — you define the controls |
When does ISO 27001 make more sense?
- Your primary market is Europe, the Middle East, APAC or government
- Your customers are asking for ISO 27001 specifically in tender documents or procurement requirements
- You need a single certification recognised across multiple jurisdictions
- You are subject to regulations that reference ISO 27001 (NIS2 Directive, certain financial services regulations)
- You want a management system framework that improves internal security governance, not just a customer-facing signal
When does SOC 2 make more sense?
- Your target market is US enterprise software buyers
- Your sales team is losing deals because prospects' security questionnaires ask for SOC 2
- You are a SaaS company selling to US-regulated industries (healthcare, financial services, legal)
- You want to define the scope narrowly (one product, one infrastructure environment) rather than the whole organisation
Can you have both?
Yes, and many scaling businesses do. ISO 27001 certification and a SOC 2 Type II report serve different buyers in different markets. There is significant overlap in the underlying controls — companies that have already done ISO 27001 typically find SOC 2 significantly less onerous, because the hard work of documenting and implementing security controls is already done.
Practical path for European companies expanding into the US: Get ISO 27001 first. It covers your European regulatory requirements, satisfies most EU enterprise buyers, and gives you the control framework that makes SOC 2 faster and cheaper to achieve when you need it for US market entry.
What about NIS2?
The EU's NIS2 Directive (effective October 2024) imposes security obligations on a broad range of businesses operating in critical sectors. It does not mandate ISO 27001 certification, but the controls required under NIS2 substantially overlap with ISO 27001's Annex A controls. Companies that have achieved ISO 27001 are significantly better positioned to demonstrate NIS2 compliance than those starting from scratch.
Frequently asked questions
How long does ISO 27001 certification take?
For most SMEs, 9–18 months from kickoff to certification. The first phase (gap analysis, risk assessment and policy development) typically takes 3–6 months. Implementation takes another 3–6 months. The certification audit itself (Stage 1 + Stage 2) takes 1–3 months.
Can we get SOC 2 Type II quickly?
Type II requires evidence of operating controls over a period — you cannot shortcut this. Most companies need 6–12 months from starting the readiness programme to completing the audit. Type I is faster but carries much less weight with sophisticated buyers.
Do we need both ISO 27001 and SOC 2 to sell to enterprise?
It depends on your market. For US-focused SaaS businesses, SOC 2 Type II is typically the priority. For European businesses, ISO 27001 usually suffices. Businesses serving both markets often pursue both, staggered over time.
What does HubSecure have?
HubSecure has ISO 27001-ready controls and SOC 2-ready architecture, with formal audit work planned. Both are visible on our Security page.
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