SOC 2 vs ISO 27001: which should you get first?

Sahil Dubey

CISA · CISM · AWS Solutions Architect Professional · 27 Jul 2026

Both prove you take security seriously, but they're built for different audiences. SOC 2 is a US-market attestation; ISO 27001 is an international certification. Which you need depends on who's asking.

The short answer

SOC 2 is a US-centric attestation report an auditor writes about your controls; ISO 27001 is an internationally recognised certification of your information security management system (ISMS). If your buyers are US SaaS companies, they'll ask for SOC 2. If they're European, Middle Eastern or global enterprises, they'll ask for ISO 27001.

Side by side

Who asks for which

It's almost always market-driven, not preference-driven:

• Selling to US SaaS or fintech → SOC 2 Type 2.
• Selling to EU/UK/UAE enterprises or on public tenders → ISO 27001.
• Selling to both → you'll eventually need both.

Cost & timeline

SOC 2 Type 1 is usually the fastest and cheapest to start — a point-in-time attestation you can often reach in weeks, which unblocks a stalled deal. SOC 2 Type 2 then adds an observation window. ISO 27001 takes longer up front because you must stand up and run an ISMS before the Stage 1 and Stage 2 audits, but its controls overlap heavily with SOC 2.

How to sequence them

• Deal blocked now by a US buyer? Start with SOC 2 Type 1, then Type 2.
• Going after EU/global from the start? Build the ISO 27001 ISMS — it also covers most of SOC 2.
• Need both? Implement one AWS control set and map it to both frameworks; don't run two programmes.

My take after 16 years

Neither is 'better'. The mistake is treating either as a paperwork exercise. Build the controls for real in AWS — IAM, KMS, CloudTrail, Config — and both a SOC 2 auditor and an ISO 27001 assessor can trace evidence in minutes. One control set, two outcomes.