B2B SaaS Platform
One Control Set, Two Frameworks: ISO 27001 + SOC 2 Type II
Key Takeaways
- A global B2B SaaS company was losing enterprise deals on both sides of the Atlantic because buyers demanded ISO 27001 in Europe and a SOC 2 Type II report in the United States.
- Tranquility Cybersecurity (TCSA) built a single unified control set mapped to both ISO/IEC 27001 Annex A and the SOC 2 Trust Services Criteria, so each control was implemented and evidenced once.
- The unified approach removed up to 60% of the duplicated audit work that running the two frameworks separately would have required.
- With an ISO 27001 certificate and a SOC 2 Type II report in hand, the company cleared US and EU enterprise security questionnaires from the same body of evidence — turning compliance into a repeatable sales asset.
A growth-stage B2B SaaS platform selling into enterprises across the United States and Europe kept hitting the same wall in late-stage deals: security review. European buyers asked for ISO/IEC 27001 certification as proof of a managed information-security program. US buyers asked for a SOC 2 Type II report. The company had neither, so deals stalled in vendor security review on both continents. Treating the two as separate, sequential projects would have meant standing up two compliance programs, writing two sets of policies, and preparing evidence twice — slow and expensive for a team that needed to keep shipping product.
The Challenge
Enterprise security questionnaires were blocking revenue on both sides of the Atlantic. US prospects required a SOC 2 Type II report. EU and international prospects required ISO 27001. The company needed both credentials, but could not afford to run two full, independent compliance programs back to back while continuing to scale.
US enterprise buyers required a SOC 2 Type II report before procurement would approve the vendor — a hard gate on every US deal of meaningful size.
European and international buyers required ISO/IEC 27001 certification as their equivalent proof of information-security maturity.
Running the two frameworks as separate sequential projects meant duplicated policies, duplicated controls, and evidence prepared twice — roughly doubling the cost and timeline.
A lean security and engineering function could not absorb two parallel compliance programs without slowing the product roadmap.
TCSA's Solution
TCSA treated ISO 27001 and SOC 2 as two reports off one program rather than two programs. We built a single unified control set, mapped each control to both ISO/IEC 27001 Annex A and the relevant SOC 2 Trust Services Criteria, and implemented and evidenced each control once. That mapping is where the leverage lives: the large majority of what an ISO 27001 ISMS and a SOC 2 control environment require is the same underlying security practice, expressed in two vocabularies. By unifying them, the duplicated work that two separate audits would have demanded was cut by up to 60%.
Single program — both frameworks off one control set
Our Approach
- Unified Control Set: Built one control library and mapped every control to both ISO/IEC 27001 Annex A and the SOC 2 Trust Services Criteria (Security, plus the additional categories in scope). Where the two standards expressed the same requirement — access control, encryption, change management, logging, incident response, vendor management — the control was implemented and documented a single time to satisfy both.
- Evidence Once, Use Twice: Designed the evidence model so a single artefact — an access review, a vulnerability scan, a change ticket — could be referenced by both the ISO 27001 audit and the SOC 2 examination. This removed the duplicate evidence collection that running the frameworks separately would have forced.
- Questionnaire-Ready Library: Structured the control set and its evidence as a reusable answer key for enterprise security questionnaires, so the SaaS team could respond to US and EU buyers from one consistent source of truth rather than improvising each time.
- Engineering Integration: Embedded controls into the team's existing DevOps workflow — version control, CI/CD, cloud configuration, and access tooling — so compliance ran inside normal engineering practice and the product roadmap kept moving.
Results & Impact
Key Outcomes
- Earned both an ISO/IEC 27001 certificate and a SOC 2 Type II report from a single unified control set, rather than running two independent compliance programs.
- Removed up to 60% of the duplicated audit work that pursuing the two frameworks separately would have required — each control implemented once, each piece of evidence collected once.
- Cleared enterprise security questionnaires from both US and EU buyers using one mapped control library as the source of truth, shortening and standardising vendor security review.
Key Success Factors
Unified Control Set
TCSA mapped one control library to both ISO/IEC 27001 Annex A and the SOC 2 Trust Services Criteria, so a single implementation satisfied both frameworks instead of two parallel programs.
Evidence Once, Use Twice
A single evidence model fed both the ISO 27001 audit and the SOC 2 examination, eliminating duplicate evidence collection and the rework that comes with it.
Questionnaire-Ready Library
The mapped control set doubled as an answer key for US and EU enterprise security questionnaires, giving the sales team one consistent source of truth.
Engineering Integration
Controls were built into the existing DevOps workflow so compliance ran inside normal engineering practice and product velocity was preserved.
Results at a Glance
| Outcome | Before TCSA | After Engagement |
|---|---|---|
| Frameworks held | Neither — blocked on questionnaires | ISO 27001 certified + SOC 2 Type II report |
| Control set | Two programs assumed, run separately | One unified control set serving both |
| Duplicated audit work | Evidence prepared twice | Up to 60% less duplication across the two audits |
| US enterprise questionnaires | Stalled in vendor security review | Cleared with mapped evidence |
| EU enterprise questionnaires | Repeated back-and-forth | Cleared from the same control library |
Anonymized engagement. Client details are withheld and timelines vary with scope.
Frequently Asked Questions
Why would a SaaS company need both ISO 27001 and SOC 2?
How much overlap is there between ISO 27001 and SOC 2?
Does running ISO 27001 and SOC 2 together really cut the work by that much?
How does dual compliance help with enterprise security questionnaires?
Are these results typical for TCSA engagements?
Earn ISO 27001 and SOC 2 from one program
TCSA has delivered 1,000+ audits — including 300+ SOC 2 engagements — across India, USA, UK, Australia and UAE. Let's map your two frameworks onto one control set.
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