Security & Compliance for B2B SaaS that wins enterprise deals
Every enterprise customer reviews you before they buy: security questionnaires such as CAIQ and SIG, a signed DPA, ISO 27001 and SOC 2 as evidence, a trust center, pentest reports, a sub-processor list and answers on data residency and AI. SIDD turns that hurdle into a fast, repeatable capability that helps you win deals.
For B2B SaaS providers from startup to scale-up to established ISV
The vendor security review is your new revenue gate
Before an enterprise customer buys your software, their procurement reviews you as a supplier. That review now co-decides the deal.
Vendor due diligence and third-party risk management have become standard in enterprise buying. As soon as your product is seriously evaluated, a stack of requirements arrives: security questionnaires, a DPA draft to sign, the question of ISO 27001 or SOC 2, a look into the trust center, the latest pentest report, the sub-processor list, plus answers on data residency and the use of AI.
Anyone without ready answers loses time. Deals stay stuck in procurement for weeks, your sales team chases internal answers, and in the worst case the deal is lost. Those who answer fast, completely and credibly accelerate the sale and build trust instead.
We therefore treat security and compliance not as a cost center but as a sales enabler. The goal is a repeatable capability: once built, you answer the next questionnaire in days rather than weeks.
- Security questionnaires: CAIQ, SIG and bespoke customer spreadsheets
- A signed DPA with a defensible sub-processor list
- ISO 27001 or SOC 2 as recognised evidence
- A trust center, a current pentest report and answers on data residency and AI
The B2B SaaS compliance map at a glance
Orientation, not legal advice. What actually applies depends on your customers, your product and your data flows. We verify scope and deadlines case by case, and some timelines are still politically in motion.
| Requirement | What it means for SaaS | Timing | Status |
|---|---|---|---|
| ISO 27001 / 27017 / 27018 | A certified ISMS with cloud and personal-data extensions, the most frequently requested evidence in questionnaires | customer-driven | market standard |
| SOC 2 | Attestation against the Trust Services Criteria, often expected by US buyers, issued by a licensed CPA audit firm | customer-driven | esp. US market |
| GDPR & nFADP (as processor) | A DPA with every customer, sub-processor management, technical and organisational measures, data-subject rights | in force | mandatory |
| EU AI Act (AI features) | Transparency, governance and possibly high-risk obligations where your product contains or offers AI features | from 2026/2027, under revision (Digital Omnibus) | verify case by case |
| EU NIS2 (supply chain) | Reaches you mainly via flow-down: your essential and important customers must secure their providers, so the duties arrive through contracts and questionnaires | depending on national transposition | EU directive, not transposed in CH |
| EU Data Act | Cloud switching, portability and fair contract terms, relevant for providers with EU customers | staggered, verify dates | verify with EU customers |
| EU CRA | Security and vulnerability duties mainly for downloadable or on-prem software, pure SaaS is largely out of scope | staggered from 2026, verify dates | verify for on-prem components |
| Data residency | Where data sits, who can access it, US access risk: a recurring question in every questionnaire | customer-driven | market standard |
Our focus areas for B2B SaaS providers
Dive into the topic that is currently blocking your next deal:
ISO 27001 & SOC 2
A certification-ready ISMS and SOC 2 readiness, the recognised evidence in procurement.
Processor layer & DPA
Defensible DPAs, sub-processor lists and the legal data-protection foundation beneath your sales.
API & web pentest
Pentests to OWASP and PTES for web, API and network, with a buyer-ready report.
AI features & EU AI Act
Governance, transparency and security for the AI features in your product.
NIS2 supply chain
When customers pass down NIS2 requirements: readiness for the contractual flow-down.
vCISO, trust center & questionnaires
A vCISO builds your trust center and answers the security questionnaires.
EU & UK representation
EU Representative under Art. 27 GDPR and UK Representative when you sell without an EU/UK establishment.
Data residency & Data Act
Answers on hosting, US access, portability and fair contract terms.
Source-code escrow
Trusted Third Party for source-code and key escrow, often required by enterprise buyers.
Why SIDD for B2B SaaS providers
A security questionnaire mixes legal, technical and AI questions in one document. We cover exactly that combination from one partner.
Legal, security and AI from one partner
DPAs and the processor layer are led by doctorate-level lawyers with CIPP/E, the ISMS and pentests by an in-house technical team under an ISO 27001 Lead Auditor. So the legal and technical answers in a questionnaire fit together.
From evidence to answer
We do not only deliver certification and readiness consulting, we build the trust center and answer the questionnaires. A one-off effort becomes a repeatable sales capability.
AI governance depth
With three dedicated AI services (AI Officer, AI Governance Check, AI Security) we answer the AI questions in the questionnaire and classify the EU AI Act obligations for the AI features in your product.
Multilingual & independent
We advise in German, French and English, fitting customers in CH, EU, UK and US. Because we do not sell an in-house SOC, our recommendations stay independent and focused on your deal.
Audit-ready evidence in tooling
We maintain the records of processing, the sub-processor list and measures in the Swiss Priverion Platform. For the next questionnaire the evidence is ready, maintained and exportable.
Fixed-fee entry
You start with a fixed-fee SaaS Security & Compliance baseline assessment with a board-ready report and a prioritised roadmap, then decide on an ongoing mandate.
Experience with platform providers
For an established Swiss manufacturer (Pilatus Aircraft) we took on the role of external data protection officer and mapped data protection in the Swiss Priverion Platform: records of processing, measures and evidence maintained in one place. We carry the same approach into the SaaS world: the legal foundation and the evidence are maintained so you can answer customer requirements fast and audit-ready.
- External data protection officer as a fixed point of contact
- Records and evidence maintained in the Priverion Platform
- An approach that transfers directly to SaaS vendor reviews
From baseline assessment to deal readiness
Status assessment
A fixed-fee assessment of your posture against your enterprise customers' requirements, with a prioritised roadmap and a board-ready report.
Build the evidence
ISMS and SOC 2 readiness, DPA and sub-processor list, pentest and AI governance, depending on what your deals demand.
Trust center & answers
Your vCISO builds the trust center, files the evidence and answers the security questionnaires so deals do not stall in procurement.
Make it repeatable
Evidence stays current in the Priverion Platform so every further questionnaire is answered in days rather than weeks.
Our tool: LexCommand
Why we work with LexCommand, our own Swiss legal AI
LexCommand is our in-house, citation-backed legal AI for the law of Switzerland, Germany, Austria and the EU. Developed and run sovereignly in Switzerland by Priverion GmbH, the company behind SIDD. We do not just preach data sovereignty and provability, we built them into our own tool, alongside the Priverion Platform.
Sovereign in Switzerland
The AI runs self-hosted on Swiss infrastructure, with no external cloud LLMs. As an independent Swiss company with no foreign parent, we process your documents in an environment we control.
No citation, no claim
Every legal statement traces back to a retrievable primary source, or it does not appear at all. That makes our recommendations auditable and verifiable, instead of merely sounding plausible.
From effort to judgement
LexCommand takes over searching, cross-checking and sourcing. That shortens turnaround times and frees our senior advisors for judgement and client dialogue, with no loss of diligence.
Three disciplines, one picture
We look at data protection, information security and AI security on a shared source base with a framework crosswalk. So you see overlapping obligations in one consolidated picture, instead of three isolated analyses.
For vendor security reviews, concretely: your CAIQ, SIG or a customer's bespoke spreadsheet runs through LexCommand as a batch, each question gets a sourced answer with its exact legal reference, and you receive the annotated questionnaire back as audit-ready Excel.
Temporally deterministic (as of today or any reference date), with jurisdiction isolation (CH/DE/AT/EU) and a citation verifier at the end of every answer.
Frequently asked questions
Do we need ISO 27001 or SOC 2?
It depends on your customers. European buyers usually ask for ISO 27001, US buyers often for SOC 2. We review your deal pipeline and recommend what unlocks the most deals. The ISO certificate is issued by an accredited certification body, the SOC 2 report by a licensed CPA audit firm. We consult and prepare, we do not issue the evidence ourselves.
Do you actually answer our security questionnaires yourselves?
Yes. Your vCISO builds a maintained answer library and the trust center and works through incoming questionnaires such as CAIQ, SIG and bespoke spreadsheets. Your sales team gets fast, consistent and evidenced answers instead of hunting for them internally.
Are you a managed-SOC provider?
No. We are a legally led governance, compliance, readiness and testing partner. We coordinate 24/7 monitoring and managed incident response with specialised providers when needed, which keeps our advice independent.
We are a small startup, is this already worth it?
Especially then. Your first large enterprise deal often fails at the vendor security review. We size the effort to your pipeline, start with what unlocks the next deal and build the rest step by step.
We sell to EU or UK customers, do we need a representative?
If you process personal data from the EU or UK without an establishment there, an EU Representative under Art. 27 GDPR or a UK Representative may be required. We take on both roles, EU representation from CHF 600 per year, UK representation from GBP 1'200 per year.
Do you work in French and English?
Yes. We advise throughout in German, French and English and answer questionnaires in your customer's language, relevant for customers in French-speaking Switzerland, the EU, the UK and the US.
Ready to win the next vendor security review?
We assess your security and compliance posture against your enterprise customers' requirements, with a board-ready report and a prioritised roadmap.