Migration doesn't fail in code.
It fails in understanding.
We supported the transition of a 20-year live system for a century-old U.S. company in a complex operating environment —
while keeping the business running and enabling a phased move toward a modern cloud-based architecture.
partnership still active
critical failure during transition
of embedded business logic
We handle migrations that are operationally complex, not just technically complex.
A leadership transition created added complexity
- By the time we became involved, the transition required knowledge transfer to be rebuilt across documentation, existing stakeholders, and live system behaviour.
- This meant the early phase depended on careful validation, not assumptions.
Two decades of business-critical logic had to be understood in context
- The IBM AS/400-based core system had evolved over more than 20 years, accumulating business rules, exceptions, workflows, and operational dependencies.
- Some of that logic was documented, while some needed to be clarified through collaboration with the people who used and relied on the system every day.
Modernization had to move forward without disrupting live operations
- This was not a standalone rebuild. The team had to maintain system stability while supporting a phased path toward a more modern architecture.
- Every decision needed to protect daily operations, downstream workflows, and migration confidence.
Complexity did not sit in one codebase.
Covered existing systems across ERP, EDI, DB2, SQL Server, and client-facing systems.
Before new development could begin, the team had to keep legacy systems stable and respond quickly to live production issues.
At the same time, the broader roadmap included platform upgrades, environment setup, database redesign, system re-architecture, and phased migration planning.
The transition required balancing immediate operational support with a long-term vision for modernization.
Three principles shaped the transition.
Rebuild business understanding before technical change
The early phase focused on understanding how the business actually ran through the system — not just what documentation said.
A long-tenured client stakeholder played a key role in supplying business background, historical context, and decision support, while close day-to-day communication helped rebuild missing knowledge.
Stabilize live operations before accelerating modernization
Before larger redevelopment efforts began, we prioritized continuity across legacy systems and production support.
This reduced operational risk and created the stability needed for broader technical planning.
Build for the future while supporting the present
In parallel with ongoing support, the team began laying the foundation for future development through modern tooling, improved workflows, architectural planning, and phased migration thinking.
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