Cloud Infrastructure Modernisation

Scaling Security and Performance for a Global Enterprise

Faced with a high traffic monolithic server environment where production, staging, databases, and worker services shared a single point of failure, I led a complete architectural overhaul to AWS.

The Challenge

The legacy system was a all-in-one monolith. Not only was this a major security risk (staging and production shared resources), but it also suffered from severe performance bottlenecks and lacked any path for horizontal scaling.

The Solution: A Distributed Architecture

I architected a modern, decoupled environment utilising: Edge Delivery: CloudFront for global content delivery and reduced latency.

Load Balancing: An Application Load Balancer (ALB) distributing traffic across a fleet of three optimised web servers.

Separation of Concerns: Moved worker and queue services to a dedicated instance to ensure background tasks never impacted user-facing performance.

Managed Data: Migrated the local database to Amazon RDS, gaining automated backups, high availability, and improved security.

The Result

Performance: Significant reduction in response times and zero downtime during peak loads.

Security: Full isolation of production and staging environments with hardened security groups.

Cost Efficiency: Optimised the resource allocation to save the client over £2,000 per month in ongoing infrastructure costs.