Summary

Section 2.5 (Hosting) describes how SUM+1 leverages AWS to achieve a highly available, scalable infrastructure:

• ECS/EKS for container orchestration (Node.js/Express, Socket.io).

• RDS (PostgreSQL) for reliable data storage; ElastiCache (Redis) for caching & Pub/Sub.

• S3 + CloudFront for fast, global distribution of the React frontend.

• Load Balancer (ALB) to handle HTTPS/WebSockets, with auto-scaling rules that respond to changing user demand.

This cloud-native approach provides robust tooling, simplifies operational tasks (patching, scaling, monitoring), and sets a solid foundation for SUM+1 to evolve in tandem with the dynamic crypto trading market.