B2B Travel Management Solution Through AWS Migration

About the Client

The client specializes in B2B travel management and sought a modern, flexible platform to replace their local data center infrastructure while enhancing rapid business solution development.

Industry:

Travel Management / Cloud Solutions
Core Objective:

Migrate existing infrastructure to a scalable, high-performance cloud platform with seamless integration to on-premises systems.

The Challenge

The client’s legacy local data center limited flexibility, scalability, and performance.

Key problems included:

  • Aging infrastructure with limited capacity for rapid solution development
  • Need for high availability and resilience
  • Integration of on-premises systems with a modern cloud environment
  • Ensuring secure, uninterrupted service during and after migration

The client required a robust cloud solution to support business continuity and growth.

The Solution: AWS Cloud Migration

App Maisters designed and implemented a high-availability AWS architecture hosted in the Ireland region.

Key implementations included:

  • Servers deployed in private subnets across multiple Availability Zones (AZs) for resilience
  • Web and API servers integrated through a Network Load Balancer in private subnets
  • Multiple servers behind the load balancer for high availability at Web and API layers
  • Static servers at Application and UI layers to manage predictable traffic patterns
  • High Availability MySQL on EC2 with automated failover across AZs
  • MS SQL databases mirrored on EC2 with automated failover using Route53 and AWS Lambda
  • Microsoft Active Directory synchronized with on-premises AD across two AZs
  • Site-to-site VPN for log transfer to on-premises Splunk
  • Native database backups stored in AWS S3

This architecture ensured security, scalability, and continuous service availability.

Workflow Transformation

Before:
Local data center → Limited scalability → Manual failover → Slower response times

After:
AWS cloud deployment → High availability → Automated failover → Faster response times → Scalable infrastructure

Tools & Technology

  • Cloud Platform: AWS (Ireland Region)
  • Databases: MySQL and MS SQL on EC2
  • Networking: Network Load Balancer, Route53, Site-to-Site VPN
  • Automation: AWS Lambda for failover DNS updates
  • Storage & Backup: AWS S3

Business Impact

  • 99% application availability on the cloud
  • Significant improvement in application response times
  • Seamless integration with on-premises systems
  • Secure and resilient infrastructure supporting business growth
  • Agile and responsive environment for rapid solution development

Conclusion

The migration to AWS transformed the client’s B2B travel management platform into a highly available, scalable, and high-performance cloud infrastructure. By leveraging multi-AZ deployments, automated failovers, and secure integrations, the client achieved uninterrupted service, improved responsiveness, and greater agility for business operations.