Legacy environment
Service and technical-debt inventory
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DELIVERY PRACTICE · Transformation
Modernizing EKM Holding’s IT environment
A staged renewal of inherited infrastructure: dependency mapping, migration of critical services and transition to the target architecture without a disruptive big-bang shutdown.
Year2025Timeline18 weeksDistributed holding · 42 critical services
Initial situation
EKM Holding · active distributed IT environment
The legacy environment contained unsupported operating systems, hidden dependencies and several generations of network hardware. A full shutdown was impossible.
Architecture
Modernizing EKM Holding’s IT environment
Transition layer
Transition architecture and migration waves
New platform
Server, network and system-software refresh
Managed operations
Acceptance tests and legacy retirement
Solution scope
Distributed holding · 42 critical services
- Service and technical-debt inventory
- Transition architecture and migration waves
- Server, network and system-software refresh
- Acceptance tests and legacy retirement
Measured outcomes
Engineer’s comment
A transition layer allowed old and new environments to run together, so an individual wave could be rolled back without affecting the whole business.
Customer testimonial
Migration became a controlled programme rather than one risky cutover, with criteria and a tested rollback plan for each wave.
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