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Built for payment and fintech teams

Turn Payment Infrastructure Risk into a Defensible Architecture Plan

Assess readiness, design controls, test resilience and organise decision evidence in one connected workspace for payment engineering, security and compliance teams.

Explore the Workspace Start Free PCI DSS Gap Analysis

Start with a free account assessment - Continue through design, testing and evidence workflows

Explore the assessment library

PCI DSS Gap AnalysisFree

Infrastructure ReadinessFree

Agentic Payment ReadinessFree

Cardholder Data Flow

Security Controls Matrix

Architecture Decision Records

Acquirer Readiness

Architecture Change Impact

Payment Failure Playbook

PCI DSS Gap AnalysisFree

Infrastructure ReadinessFree

Agentic Payment ReadinessFree

Cardholder Data Flow

Security Controls Matrix

Architecture Decision Records

Acquirer Readiness

Architecture Change Impact

Payment Failure Playbook

Agent Identity Designer

Spend Controls

Idempotency & Safety Rails

Agent Payment Flow Simulator

Observability Pack

Agent Rollback Designer

Latency Analysis

Scaling Roadmap

Infrastructure Cost Modeller

Multi-Region Failover

Agent Identity Designer

Spend Controls

Idempotency & Safety Rails

Agent Payment Flow Simulator

Observability Pack

Agent Rollback Designer

Latency Analysis

Scaling Roadmap

Infrastructure Cost Modeller

Multi-Region Failover

19 guided assessment tools for payment infrastructure

Built with real banking operational experience and a practical understanding of regulated environments.

Built for fintech engineering teams preparing for QSA assessments and acquirer due diligence.

Your payment architecture workspace

Know what to validate.
Decide what comes next.

Work through payment risks, design choices and review evidence in one SYNC journey.

The payment question

The customer retries.

A £24 wallet payment times out. Could another tap charge twice?

Decide how retries should behave.

Pay merchant

1 / 6

Apply this to your architecture

Know which payment risks to fix first.

Get an expert review of one critical flow, with evidence-qualified findings and prioritised recommendations.

Review my payment architecture →Free fit conversation. Scope agreed before paid work.

See how your work comes together in SYNC

Find what needs attention

Priority risks and review questions.

Choose a response

Design choices and trade-offs.

Plan the validation

Scenarios and evidence to collect.

Support the decision

Findings, decisions and open actions.

Want to keep working through your architecture?Explore workspace membership →

Illustrative scenarios, not live payment tests. SYNC supports assessment, modelling and evidence planning; validate integrations in your own test environment. Membership and expert reviews are separate.

See what your free assessment can reveal

From assessment answers to a clearer picture of your risks.

Explore illustrative scorecard previews before creating your free account. Actual scores and recommendations depend on your answers; these are not customer results or compliance determinations.

Illustrative preview · Not a real result

PCI DSS Gap Analysis

Example requirement-level gap overview

EXAMPLE DATA

68/100

Example controls addressed

Example category breakdown

Access controls82%

Logging and monitoring61%

Evidence coverage48%

Example next actions

Review missing evidence references

Prioritise incomplete control responses

Create Your Free Account & Start Assessment →Free to sign up · No payment required · Your scorecard is based on your answers

Showing PCI DSS Gap Analysis example scorecard

One workspace. Four connected payment workflows.

Enter at the stage that matches your current problem. Keep the specialist tools, but use them as connected steps from initial assessment to an architecture and evidence trail your team can maintain.

Workflow 1

Assess

Identify readiness, control and evidence questions that could delay launch, review or approval.

Scored assessments · Prioritised gaps · Review starting point

Explore Assess

Workflow 2

Design

Define data boundaries, architecture decisions, agent identities and deterministic safety controls.

Data flows · Guardrail configurations · Architecture decisions

Explore Design

Workflow 3

Test

Challenge the proposed design against latency, growth, failure, rollback and regional disruption.

Failure playbooks · Recovery decisions · Resilience plans

Explore Test

Workflow 4

Evidence

Organise control ownership, implementation status, evidence references and decision history.

Control matrix · ADR record · Structured review trail

Explore Evidence

Payment Architecture Review

Reduce payment risk. Simplify architecture. Control cost.

Understand where one critical payment flow may be creating security exposure, unnecessary complexity or operational risk.

Our expert-led review evaluates your existing payment architecture and its supporting infrastructure. You receive evidence-qualified findings and prioritised recommendations — with scope agreed before the engagement. Redesign, implementation and specialist testing are not included unless separately agreed.

Founding Client Architecture Review · £3,500 fixed fee

First three founding clients only. Standard fee thereafter: £5,000. Free initial fit conversation; scope, taxes, payment terms and delivery timing agreed before work begins.

Request a free fit conversation ↓See how it works ↓

Assess · Understand the current architecture

Confirm the existing payment flow, review objectives and evidence needed.

Review · Examine the existing design

Evaluate security, resilience, dependencies, trade-offs and operational cost.

Validate · Qualify the findings

Check findings against available evidence, separate assumptions and identify specialist testing needs.

Recommend · Prioritise next steps

Deliver recommendations, evidence references, decision owners and areas for further investigation.

After engagement approval · Example client workspace

Architecture Review

● In progress

Your review journeyStage 1 of 4

AssessReviewValidateRecommend

Example review findings08Illustrative data

Decisions awaiting review03Illustrative data

Next action · Assess

Assess the existing payment flow

Confirm the agreed payment journey, current architecture, evidence owners and review questions.

View assessment scope →

Illustrative workspace preview · Sample figures and actions, not a live client account. Actual deliverables depend on the agreed engagement scope.

This is a review of the existing architecture, not a new architecture design or implementation. It is not a PCI DSS certification, QSA audit, penetration test or guarantee of regulatory compliance.

Three founding-client places · Free fit conversation

Ready to discuss your payment architecture?

Tell us which payment flow needs attention. We start with a short fit conversation, then agree any scope and commercial terms before work begins.

What happens next

Four simple steps, with no commitment to paid work during the initial conversation.

Founding review01 / 04How it works

01Share

02Discuss

03Approve

04Decide

Step 01 · Share

Share your challenge

Tell us which existing payment flow matters, what decision is approaching, and what is unclear. The initial application does not require you to send sensitive payment data or confidential diagrams.

Then your review moves into delivery. Once the engagement is agreed, the approved payment-flow scope, review objectives and deliverables form the starting point for your private Architecture Review workspace. Assess → Review → Validate → Recommend follows within the agreed scope; no second discovery process or new architecture design is implied.

Request a fit conversation

No certification or compliance outcome is promised. If the work requires a QSA, penetration tester, legal adviser or another specialist, that dependency will be identified rather than represented as part of the review.

The review method

Understand the current architecture before deciding what to change.

The review follows one payment flow from entry to outcome. It separates what can be observed, what your team states, what remains uncertain and what requires specialist confirmation.

1. Assess the current state

Map the flow, system boundaries, third parties, data movement, dependencies, ownership and the evidence currently available.

2. Test the architecture

Challenge assumptions, failure paths, recovery decisions, control ownership and evidence traceability through structured review—not penetration testing.

3. Organise the evidence

Turn findings into a traceable inventory of decisions, evidence references, open questions, responsible owners and prioritised next actions.

What you leave with: a clearer current-state payment architecture, a prioritised findings register and a practical plan your engineering, security and compliance teams can work through.

Assessment Questions, Outcomes and Next Steps

Build Your Initial PCI DSS Readiness View — Free

Create a structured initial review against PCI DSS v4.0.1, then confirm each answer and supporting evidence with the people responsible for your environment. Free Sync Your Cloud account required.

Start Your Free PCI DSS Gap Review

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