About This Architecture

Enterprise-grade merchant onboarding and KYC platform built on AWS using microservices architecture with .NET 8, RDS Aurora, ECS Fargate, and MSK Kafka for event-driven workflows. Frontend layer leverages CloudFront CDN, WAF, and Cognito authentication, while backend microservices (Onboarding, KYC, Identity, Integration, Notification) communicate via Kafka event bus and Step Functions orchestration. Data isolation follows database-per-service pattern with Aurora for transactional data, DynamoDB for logs, and S3 for document storage, integrated with third-party providers for BVN, NIN, CAC, and sanctions screening validation. Observability stack includes CloudWatch, X-Ray, OpenSearch, and Grafana; security enforced through Shield Advanced, Network Firewall, KMS encryption, Secrets Manager, and GuardDuty threat detection. Fork this diagram on Diagrams.so to customize service boundaries, add compliance workflows, or adapt for your fintech regulatory requirements.

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How do you design a scalable AWS merchant onboarding and KYC platform with microservices, event-driven workflows, and third-party provider integrations?

This diagram shows a production fintech architecture using ECS microservices (.NET 8), RDS Aurora for transactional data, MSK Kafka for event streaming, and Step Functions for approval orchestration. Frontend security includes CloudFront CDN, WAF, and Cognito; backend integrates BVN, NIN, CAC, and sanctions screening providers. Observability spans CloudWatch, X-Ray, OpenSearch, and Grafana with Gu