ISO 27001 vs SOC 2: Which Certification Should You Get First?

You can't do both at once. They're expensive, time-consuming, and require sustained effort. So which one first?

Short answer: SOC 2 if you sell primarily in North America. ISO 27001 if you sell primarily in Europe or globally.

But it's more nuanced than geography. Let's break it down.

SOC 2 Overview

Aspect	Details
Origin	AICPA (American Institute of CPAs)
Focus	Service organization controls — how you handle customer data
Structure	5 Trust Service Criteria (Security required, 4 optional)
Output	Audit report (Type I or Type II) — NOT a certification
Validity	12 months (annual re-audit)
Cost	$20K-80K (audit) + $10K-30K/year (compliance tools)
Timeline	Type I: 2-4 months / Type II: 6-12 months

Key nuance: SOC 2 is an attestation, not a certification. An auditor attests that your controls meet the criteria. You don't get a "certified" badge — you share the audit report with customers under NDA.

ISO 27001 Overview

Aspect	Details
Origin	ISO (International Organization for Standardization)
Focus	Information Security Management System (ISMS) — organizational security framework
Structure	93 controls across 4 categories (Annex A)
Output	Certificate from accredited body
Validity	3 years (with annual surveillance audits)
Cost	$30K-100K (initial) + $10K-30K/year (surveillance)
Timeline	6-12 months (initial certification)

Key nuance: ISO 27001 IS a certification. You get a certificate you can publicly display. Customers don't need to see the full audit report.

Head-to-Head Comparison

Factor	SOC 2	ISO 27001
Market recognition	North America dominant	Global (especially EU, UK, APAC)
Effort	Moderate	Higher (requires full ISMS)
Prescriptiveness	Flexible (principles-based)	More prescriptive (control-based)
Public proof	Must share report	Display certificate
Renewal	Annual re-audit	3-year cycle
EU regulations	Not specifically referenced	Referenced by DORA, NIS2

Decision Framework

Get SOC 2 First If:

• 70%+ of customers are in North America
• Your sales team hears "SOC 2" more than "ISO 27001"
• You need to close deals fast (Type I is faster than ISO certification)
• You're selling to tech companies and startups

Get ISO 27001 First If:

• Significant European customer base
• Selling to financial services (DORA references ISO 27001)
• Selling to government or critical infrastructure (NIS2 references it)
• You want a publicly displayable certification
• You plan to expand globally

Get Both If:

• You sell globally to enterprise customers
• You're in a regulated industry
• You have $100K+ budget and 12+ months runway for compliance

The Overlap Is Significant

Good news: ~60% of controls overlap between SOC 2 and ISO 27001. If you build one properly, the second is significantly easier.

Shared areas:

• Access control


• Encryption and data protection


• Incident response


• Change management


• Risk assessment


• Vulnerability management


• Monitoring and logging

Start With Your Security Baseline

Regardless of which certification you pursue, the first step is the same: know your current security posture.

Scan your application with TrustGate

Review findings mapped to both SOC 2 and ISO 27001 controls

Fix critical items (usually security headers, TLS, cookies)

Generate a compliance report as your baseline documentation

Use the report to scope your certification project

Both frameworks require evidence of regular security testing. Automated scanning is the cheapest, fastest way to generate that evidence continuously.