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Case 05

System rebuild without disruption

Stepwise rebuild of a growing platform that had outgrown its original architecture without stopping operations.

ClientSoftware · AU
ServiceConsulting & Architecture
Duration4 months
StatusComplete
The problem

What they were dealing with.

The platform had grown beyond its original architecture. Performance was degrading, deployments were risky, and the team had lost confidence in the codebase. A full rebuild was needed, but the system could not go down.

Outcomes

What changed.

  • 100%Continuous uptime during rebuild
  • 0Customer-impacting incidents
  • 4 monthsFull architecture transition
How we worked

Extract, generate, validate, load.

We designed a strangler-fig migration, replacing components piece by piece while keeping the existing system live. Each replacement was validated in production before the old component was retired.

Where it is now

Where it sits now.

The platform runs on the new architecture in production. Deployment confidence is restored and the engineering team has resumed feature development.

More work

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