AWS Cloud Migration for E-Commerce Startup
Migrated a high-traffic e-commerce platform from an unreliable shared VPS to a fully managed AWS stack — achieving 99.9% uptime and 3× faster page loads.
The Problem
A growing e-commerce startup was running on a cheap shared VPS that crashed under any traffic spike. The site went down 4–6 times per month with no CDN, no CI/CD, and no backups — each outage costing significant revenue.
Our Solution
Full migration to AWS: EC2 with Auto Scaling Group (1–6 instances), RDS MySQL Multi-AZ with read replica, ElastiCache Redis for sessions and cart caching, S3 + CloudFront for all static assets, Application Load Balancer with SSL termination, GitHub Actions CI/CD pipeline replacing manual FTP, CloudWatch monitoring with SNS alerts, and WAF rules for common attack patterns. Zero-downtime cutover executed at 2am using blue/green deployment.
Our Approach
Infrastructure Audit
Analysed the current architecture, codebase dependencies, traffic patterns from access logs, and identified migration risks.
Architecture Design
Designed the target AWS architecture with right-sizing for current load + 5× headroom. Produced architecture diagram and cost estimate before any work began.
Staging Environment
Built the full AWS stack in staging, migrated the database, and ran parallel for 2 weeks of stability testing.
CI/CD Pipeline
GitHub Actions to build, test, and deploy to EC2 on push to main — replacing the error-prone manual FTP process.
Zero-Downtime Cutover
DNS cutover at 2am using blue/green deployment. Total switchover time: 8 minutes, zero customer impact.
The Results
| Metric | Before | After |
|---|---|---|
| Monthly Uptime | ~94% | 99.9% |
| Page Load (LCP) | 6.2 seconds | 1.9 seconds |
| Outages/Month | 4–6 incidents | 0 |
| Deployment Process | Manual FTP | CI/CD (< 3 min) |
Tech Stack
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