Legacy System Migration
Step-by-step migration of legacy systems to AWS, for example at an energy provider: lower operating costs as the goal, with both systems running in parallel and no downtime.
Solution example: how we implement a project like this. It does not describe a single client project.
Room for New Ideas Through Migration
Initial situation & goals
Typical starting point: legacy systems hold back new projects. A cloud migration is meant to lower costs, add flexibility and make growth possible.
The problem
Challenges
High costs
Maintaining the existing systems is expensive and inefficient.
Integration
There is no connection to modern digital tools.
Data migration
Moving large volumes of data comes with real risks.
Goals
Approach
Lower costs
Reduce operating costs with a modern cloud infrastructure.
Integration
Add modern interfaces and APIs.
Ready for what comes next
An architecture that scales and adapts.
A Step-by-Step Move to the Cloud
Approach
How we approach it: we switch over in steps, so risks stay small and the old and new systems can run side by side.
Project management
Analysis and prioritization
Identify and assess the critical systems.
Gradual switchover
Migrate in small, controlled iterations.
Technologies & tools
AWS Cloud
EC2, RDS and VPC for an infrastructure that scales.
Containerization
Docker to deploy and manage services.
CI/CD
Automated development and deployment processes.
Security
Security policies built in from the start (security by design).
Team & roles
Development team
Specialized in cloud architectures and migrations.
DevOps team
Responsible for CI/CD and infrastructure management.
Technical Solution
Implementation
A clear target architecture and careful planning of each step are the basis for a migration without data loss.
Core features
Cloud infrastructure
Set up an architecture on AWS services that scales.
Middleware integration
Connects the old and new systems during the transition.
Data migration
Safe, step-by-step transfer of the legacy data.
Automated tests
Verify data integrity and system stability.
Summary: A Modern Cloud Architecture Pays Off
Lessons learned
What it delivers: lessons and recommendations for migrating legacy systems.
Step-by-step delivery
An iterative migration keeps risks small.
Cloud-native approach
Costs and scaling become easier to control.
Next steps
Add more cloud services
Automate more business processes
Bottom line
Modernizing a legacy system lowers ongoing maintenance costs and lays the groundwork for new features and interfaces.
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