FinTech SaaS Platform Architecture Template
Secure financial platform with compliance, audit logs, and multi-currency. Generate a complete cloud architecture with cost estimates, Terraform, sequence diagrams, CLI deployment workflows, and a GitHub Actions pipeline — on AWS, Azure, or GCP.
Production estimates. Your workspace generates actuals.
Architecture Overview
Handles payment flows through PCI-compliant card processing, stores transactions in an encrypted multi-region database, and maintains tamper-evident audit logs with MFA-backed access and real-time fraud scoring.
~8
cloud services
AWS Architecture Diagram
Full topology with all services and request flows — switch providers above to compare.
FinTech SaaS Platform - AWS - Production implementation lanes - CloudDesign AI
Architecture Breakdown
Every major component, what it does, and the AWS service powering it.
WAF + Shield
AWS WAF + Shield
Handles business logic and integrates with surrounding services.
API Gateway
Amazon API Gateway (Private)
Routes, authenticates, and rate-limits incoming requests.
Transaction Handler
Lambda
Handles business logic and integrates with surrounding services.
Encrypted DB
Amazon Aurora PostgreSQL (CMK)
Stores and retrieves data with durability and access controls.
Audit Log Store
Amazon DynamoDB
Stores and retrieves data with durability and access controls.
Key Management
KMS
Handles business logic and integrates with surrounding services.
Auth + MFA
Amazon Cognito
Handles business logic and integrates with surrounding services.
Compliance Monitor
AWS Security Hub + Config
Handles business logic and integrates with surrounding services.
Cost Estimate — AWS
Representative production estimate. Your workspace generates a breakdown based on your actual configuration.
AWS — $600 / month estimated
WAF + Shield
DDoS protection
API Gateway
Request routing
Lambda
Transaction logic
Aurora + KMS
Encrypted DB
DynamoDB
Audit logs
KMS
Key management
Cognito
Auth + MFA
GuardDuty
Compliance monitor
Total estimate
$600 / month
What CloudDesign AI Generates
Every generation produces a complete set of production-ready artifacts.
Architecture Diagram
Full topology showing every service and how traffic flows between them.
Sequence Diagrams
Request lifecycle flows for upload, query, and overall system paths.
Cost Analysis
Per-service cost breakdown with total estimate for the selected provider.
Terraform Code
Complete infrastructure-as-code export you can deploy immediately.
CLI Deployment Workflow
Ordered provisioning commands for every service in the architecture.
GitHub Actions Pipeline
Ready-to-commit `.github/workflows/terraform.yml` for CI/CD.
Tradeoff Analysis
Cost, scalability, reliability, and operational complexity breakdown.
Production Checklist
Architecture-specific risks and mitigations before you go live.
Terraform Preview — AWS
Provider-specific infrastructure code. The full export is available after generating.
resource "aws_kms_key" "db_key" {
description = "FinTech DB encryption key"
enable_key_rotation = true
deletion_window_in_days = 30
}
resource "aws_rds_cluster" "aurora" {
cluster_identifier = "${var.prefix}-fintech"
engine = "aurora-postgresql"
storage_encrypted = true
kms_key_id = aws_kms_key.db_key.arn
}
resource "aws_wafv2_web_acl" "fintech" {
name = "${var.prefix}-waf"
scope = "REGIONAL"
}
# + 390 more lines — generate the full export →Full Terraform export includes: variables, outputs, IAM roles, environment configs, and module structure.
Generate Full TerraformCLI Preview — AWS
Ordered provisioning commands for every service. The full workflow is generated in your workspace.
aws kms create-key --description "FinTech DB Key" \
--key-usage ENCRYPT_DECRYPT
aws rds create-db-cluster --db-cluster-identifier $PREFIX-fintech \
--engine aurora-postgresql --storage-encrypted
aws wafv2 create-web-acl --name $PREFIX-waf --scope REGIONAL
aws guardduty create-detector --enable
# + 28 more commands — generate the full workflow →Full CLI workflow includes: bucket creation, networking, IAM setup, application deployment, and health checks — in order.
Generate Full CLI WorkflowCloud Provider Mapping
Every architectural function mapped to its native service on AWS, Azure, and GCP.
Architecture Tradeoffs
How AWS, Azure, and GCP compare across the dimensions that matter most for this architecture.
Compliance Coverage
AWS and Azure hold more financial-services compliance certifications (PCI DSS, SOC 2, ISO 27001).
Key Management
AWS KMS and Azure Key Vault both support HSM-backed keys and automatic rotation; GCP KMS is strong but fewer HSM tiers.
Cost Efficiency
GCP is typically cheapest for FinTech workloads due to committed use discounts on Cloud SQL and Cloud Run.
Audit Capabilities
Azure Defender and Sentinel provide the most integrated audit and SIEM capabilities out of the box.
Fraud Detection
AWS has mature fraud-detection integrations via SageMaker and third-party marketplace partners.
Production Risks for This Architecture
Known failure modes with concrete mitigations — included in every generated checklist.
PCI DSS scope creep: adding new services that touch cardholder data without scoping review pulls them into compliance audit — maintain a strict network segment for card data flow
KMS key rotation complexity: rotating field-level encryption keys requires re-encrypting existing records — plan a migration strategy before your first key rotation is due
Audit trail gaps under high write load: DynamoDB throttling during transaction peaks can silently drop audit events — use DynamoDB Streams with a dead-letter queue to guarantee delivery
Key Capabilities Covered
Frequently Asked Questions
Common questions about this architecture and what CloudDesign AI generates.
Generate the FinTech SaaS Platform Architecture
Get the full architecture diagram, cost breakdown, Terraform, CLI workflow, and GitHub Actions pipeline — specific to your chosen cloud provider.
Free account · No credit card required · 5 architecture runs per month