Multi-tier fintech payment platform on AWS af-south-1 with Cloudflare edge protection, dual VPCs for production and UAT, and isolated subnets for compute, storage, and data layers. Internet Users route through Cloudflare to an ALB in the Public Subnet, which distributes traffic to three EC2 App Servers in the Private App Subnet, while a Pritunl VPN Server enables secure operations access. Shared storage via EFS, observability through Graylog, deployment via GoCD, and task automation via Rundeck support operational excellence. RDS MySQL 8.0.44 Primary and ElastiCache Redis with replicas provide persistent and in-memory data layers with high availability. Fork this diagram to customize subnets, add cross-region failover, or integrate additional AWS services like Secrets Manager or VPC Flow Logs.