Legacy Infrastructure Migration Application

Migrating Legacy Infrastructure to AWS with High Availability and Automation

Customer challenges

Our client was operating on a legacy infrastructure hosted on Armor Cloud, which posed scalability and performance limitations. The environment relied on MySQL v5.1.73, introducing critical security vulnerabilities and slow performance. Manual deployments often caused inconsistencies in production, and the single-server setup lacked redundancy and failover. The absence of automated backup and Disaster Recovery (DR) mechanisms created risks of data loss and downtime, directly affecting business continuity.

Solutions

We implemented a comprehensive AWS migration and modernization strategy to improve scalability, availability, and automation:

Migration Strategy with AWS MGN

Used AWS Application Migration Service (MGN) to rehost and migrate application servers from Armor Cloud to Amazon EC2 instances.

Database Migration with AWS DMS

Leveraged AWS Database Migration Service (DMS) for live migration of MySQL databases to Amazon RDS with minimal downtime.

Enhanced Security and Compliance

Built PCI-compliant architecture with private subnets, NAT Gateway, and IAM role-based access for controlled access and data protection.

High Availability and Redundancy

Implemented Multi-AZ RDS deployment and Auto Scaling groups for improved uptime, fault tolerance, and business continuity.

Deployment Automation with CI/CD

Set up AWS CodePipeline and CodeBuild for automated, repeatable, and consistent deployment processes.

Real-time Monitoring and Logging

Integrated CloudWatch and CloudTrail for proactive performance and security monitoring across all environments.

AWS services used

AWS Application Migration Service (MGN)AWS Database Migration Service (DMS)Amazon EC2Amazon RDSAmazon S3AWS CodePipelineAWS CodeBuildAmazon CloudWatchAWS CloudTrailAWS IAMAmazon VPC

Results

Post-migration, Client achieved enhanced reliability, cost efficiency, and scalability through AWS modernization:

High Availability: Achieved 99.95% uptime post-migration, ensuring consistent performance and reliability.
Cost Optimization: Reduced infrastructure costs by 35% through optimized EC2 and RDS instance selection.
Deployment Efficiency: Cut deployment time from hours to minutes using automated CI/CD pipelines.
Scalability: Achieved 3× scalability to handle high seasonal E-commerce traffic without performance degradation.
Seamless Migration: Used DMS continuous data replication for near-zero downtime migration.
Risk Mitigation: Conducted dependency mapping to minimize risks during migration and ensure a smooth transition.
Efficient Cutover: Combined AWS MGN and DMS to enable a seamless server and database cutover process.
Performance & Monitoring: Continuous post-migration tuning and monitoring improved stability and user experience.