Architecting Critical Payment Systems for Multi-Region Resiliency
Industries Blog
This article discusses how to architect critical payment systems for high availability and disaster recovery across multiple AWS regions. It explains a design using the ISO 20022 messaging standard, serverless architecture, and AWS services like API Gateway, Lambda, DynamoDB, SQS, SNS, and Route 53.
Specifically, the article covers:
- Business requirements for exactly-once payment processing using ISO 20022 status codes
- Design considerations like using small event-driven microservices, transactional metadata, and active-active multi-region deployment
- How various AWS services are used in the solution architecture for each step of the workflow
- Failure scenarios and strategies for routing, application, and metadata failover across regions
- Conclusion highlighting key design aspects for high availability and disaster recovery
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