Customer Overview
The customer’s environment consisted of:
- Multiple backend microservices running on AWS EC2
- Kafka and Zookeeper clusters
- Cassandra distributed database
- PostgreSQL databases
- Neo4j graph database
- Elasticsearch and ELK Stack
- Jenkins CI/CD platform
- Development and testing front-end applications
- OpenVPN remote access infrastructure
- AWS Load Balancers and networking services
The migration presented several challenges:
- Maintaining application availability during migration
- Preserving data consistency across multiple database platforms
- Migrating distributed Kafka workloads without data loss
- Rebuilding CI/CD pipelines in a new environment
- Replacing AWS-native services with equivalent on-prem solutions
- Ensuring operational readiness and security compliance after cutover
Solution Delivered by iDevopz
iDevopz executed a structured four-phase migration program.
Phase 1 – Assessment & Planning
- Complete AWS infrastructure discovery
- Application dependency mapping
- Database and middleware assessment
- Capacity planning for compute, storage, and network resources
- Migration runbook preparation
- Rollback strategy development
- Security and access architecture design
Phase 2 – On-Prem Infrastructure Build
The target environment was designed using virtualization technologies and enterprise-grade infrastructure components.
Key implementations included:
- Virtualized compute platform
- High-availability load balancing
- Centralized monitoring and logging
- Backup and recovery framework
- Network segmentation and firewall hardening
- VPN access services
Phase 3 – Workload Migration
The migration covered:
Application Layer
- Backend microservices
- Frontend applications
- Java-based OTP services
Data Layer
- Cassandra migration with consistency validation
- PostgreSQL migration
- Neo4j migration
- Elasticsearch migration and reindexing
Middleware Layer
- Kafka and Zookeeper migration
- Logstash pipeline migration
DevOps Platform
- Jenkins jobs and pipelines migration
- Credential migration
- CI/CD validation testing
Phase 4 – Testing & Production Cutover
- Functional testing
- Performance benchmarking
- Security validation
- User acceptance testing
- Controlled production cutover
- Hypercare support and knowledge transfer
Results Achieved
Successful Migration Completion
100% of identified workloads were migrated from AWS to the on-premises environment.
Business Continuity
Critical applications and services were successfully transitioned with controlled downtime and
validated rollback readiness.
Infrastructure Modernization
The customer established a centralized on-premises platform supporting:
- Application hosting
- Data services
- Monitoring and observability
- Secure remote access
- Continuous delivery pipelines
Operational Efficiency
The new environment provided:
- Greater control over infrastructure resources
- Improved visibility across applications and systems
- Standardized monitoring and operational processes
- Enhanced governance and security controls
Knowledge Transfer & Documentation
Comprehensive migration documentation, architecture diagrams, operational runbooks, and support procedures were delivered to ensure long-term sustainability.
Technologies Involved
AWS EC2 | Kafka | Zookeeper | Cassandra | PostgreSQL | Neo4j | Elasticsearch | ELK Stack | Jenkins | OpenVPN | NGINX/HAProxy | VMware/KVM | Linux
Project Highlights
- End-to-end AWS to On-Prem migration
- Multi-database migration strategy
- Distributed messaging platform migration
- CI/CD platform migration
- High-availability architecture implementation
- Centralized logging and monitoring deployment
- Production cutover and operational handover
