Dev Crafts Impenetrable AWS Citadel: Bastion Gatekeeper, Transit Gateway Moat, Auto-Scaling Minions Keep App Unsinkable (Finally)

A comprehensive AWS architecture project has been successfully deployed, mirroring real-world production environments. The project involves creating a secure, highly available application with bastion access, transit gateway, and auto-scaling. Two VPCs, bastion-vpc and app-vpc, were designed with isolated responsibilities, ensuring administrative access is decoupled from the application environment. A Transit Gateway was introduced to enable private VPC-to-VPC communication, eliminating the need for VPC peering. The project utilized an Auto Scaling Group behind a Network Load Balancer, with a minimum of two and a maximum of four instances, to ensure fault tolerance and scalability. The architecture also features end-to-end logging and DNS routing, with CloudWatch Log Group and VPC Flow Logs enabled for both VPCs. The project demonstrates a deep understanding of secure AWS network design, Transit Gateway, and bastion-based access patterns, providing a highly available and scalable application environment.