Enterprise Cloud Migration to AWS ECS Fargate: Scaling from On-Premise to Cloud Infrastructur

Project Overview

Led the complete migration of a legacy enterprise infrastructure from traditional on-premise datacenters to AWS ECS Fargate, enabling the organization to scale horizontally while reducing operational overhead and infrastructure costs by over 40%.

Business Challenge

• Legacy infrastructure with manual deployment processes requiring weeks to release updates
• High maintenance costs ($50K+ monthly) with limited scalability
• Complex application dependencies causing deployment failures
• No disaster recovery or high availability mechanisms in place
• Team spending 70% of time on manual operations instead of innovation

Solution Implemented

• Containerization Strategy: Dockerized all microservices and applications, reducing deployment size by 60%
• AWS ECS Fargate: Serverless container orchestration with automatic scaling based on CPU/memory metrics
• Infrastructure as Code: Terraform templates for reproducible, version-controlled infrastructure
• CI/CD Pipeline: GitHub Actions automated testing, building, and deployment workflow
• Monitoring & Logging: CloudWatch dashboards with real-time alerts and performance metrics
• Security: IAM roles, security groups, VPC configuration, and secret management

Results Achieved

• ✅ 40% Cost Reduction: Monthly infrastructure costs dropped from $50K to $30K
• ✅ 3x Faster Deployments: Reduced deployment time from 2-3 weeks to 2-3 days
• ✅ 99.9% Uptime SLA: Eliminated single points of failure with auto-scaling and multi-AZ deployment
• ✅ Automated Scaling: Automatically handles traffic spikes without manual intervention
• ✅ 70% Reduction in Manual Operations: Freed up team to focus on product development
• ✅ Zero Downtime Deployments: Blue-green deployment strategy implemented

Key Technologies & Practices

Infrastructure: AWS ECS Fargate, AWS RDS, AWS ElastiCache, Application Load Balancer (ALB)

Infrastructure as Code: Terraform modules for networking, compute, database, and monitoring

CI/CD: GitHub Actions with automated testing, Docker image building, and ECR registry

Containerization: Docker with optimized Dockerfile and multi-stage builds

Monitoring: CloudWatch metrics, dashboards, and SNS alerts for proactive incident response