SOC 2 vs. ISO 27001: Which Should You Pursue First?

Two Frameworks, Different Purposes

SOC 2 and ISO 27001 both signal that an organization takes information security seriously, and there's real overlap in the underlying controls. But they were built for different audiences and different purposes, and the "right" one to pursue first depends more on your customers and market than on which framework is objectively "better."

SOC 2: Built for U.S. B2B Trust

SOC 2 is an American Institute of CPAs (AICPA) attestation, not a certification — an independent auditor examines your controls against the Trust Services Criteria (security, availability, processing integrity, confidentiality, privacy) and issues a report, not a certificate.

SOC 2 tends to be the right first move if:

• Your customers are primarily U.S.-based B2B / SaaS companies
• Enterprise sales conversations regularly stall on "do you have a SOC 2 report?"
• You want a faster initial path — a Type I report (design of controls at a point in time) can often be achieved faster than a full ISO 27001 certification, though Type II (operating effectiveness over a period, typically 6–12 months) is what most enterprise buyers actually expect
• You need something a prospect's security team can review directly (SOC 2 reports are typically shared under NDA, which security teams are used to evaluating)

What it involves: defining your Trust Services Criteria scope, implementing and documenting controls, and undergoing an audit by a licensed CPA firm. A Type II audit requires controls to have been operating for the full review period before the report can be issued.

ISO 27001: Built for International Certification

ISO 27001 is an international standard for an Information Security Management System (ISMS) — a structured, ongoing program for managing information security risk, not just a snapshot of controls. It results in a certification (valid for three years, with annual surveillance audits), issued by an accredited certification body.

ISO 27001 tends to be the right first move if:

• You sell internationally, especially into Europe, APAC, or the Middle East, where it's more widely recognized and often explicitly required
• Government or highly regulated enterprise customers ask for it specifically
• You want a globally recognized certificate rather than a report shared under NDA
• You're building a security program you intend to run as an ongoing management system regardless of the audit

What it involves: establishing an ISMS covering risk assessment, treatment, and continual improvement — not just point-in-time controls — then a two-stage certification audit (documentation review, then implementation review) followed by annual surveillance audits.

The Real Decision Factors

Factor	Favors SOC 2	Favors ISO 27001
Primary customer base	U.S. B2B / SaaS	International, especially EU/APAC
Sales blocker today	"Do you have a SOC 2 report?"	"Are you ISO 27001 certified?"
Timeline pressure	Type I can move faster	Full certification takes longer
Preference	Report reviewed under NDA	Publicly referenceable certificate
Program maturity goal	Point-in-time controls attestation	Ongoing management system

You Will Likely Need Both Eventually

For companies selling into both U.S. enterprise and international markets, pursuing both is common — and the good news is the control overlap is substantial. Access control, encryption, incident response, vendor management, and change management requirements largely map across both frameworks. Building your control environment with both in mind from the start avoids rework later, even if you only formally pursue one initially.

Common Mistakes

Starting the audit before the controls are real. Both frameworks require evidence that controls actually operate, not just that policies exist. Rushing into an audit before controls are implemented and operating typically leads to a failed audit or a report full of exceptions. Treating it as a one-time project. Both SOC 2 (Type II, annually) and ISO 27001 (annual surveillance audits, recertification every three years) require ongoing maintenance. The controls need to keep operating after the audit, not just during it. Scoping too broadly or too narrowly. Scope determines both audit cost and what your report/certificate actually covers. Getting scope wrong either creates unnecessary audit burden or leaves out the systems your customers actually care about.

Getting Started

Before choosing a framework, get a clear picture of your current control maturity against both. That gap analysis — not the framework name — is what actually determines your timeline and cost.

Not sure which framework fits your customers and timeline? Get a security assessment and get a clear, framework-agnostic read on where you stand before committing to an audit.