Modernising legacy rail systems on Microsoft Azure.

A phased migration of legacy systems onto Azure with a Fabric data layer — lower run cost, zero-downtime cutover, and a platform ready for AI.

AzureCloudFabric

12Legacy systems modernised

45%Lower platform run cost

ZeroDowntime during cutover

The Challenge.

Ageing on-premise systems carried safety-relevant operational data with rising maintenance cost and shrinking vendor support. Modernisation could not interrupt operations.

End-of-life on-premise systems

Rising run and maintenance cost

No tolerance for operational downtime

The Solution.

We executed a phased Azure migration with parallel running and staged cutovers, and rebuilt the data layer on Fabric so reporting and future AI share one governed platform.

Phased migration with parallel running

Fabric data layer built alongside the migration

THE IMPACT

"We retired systems older than some of our staff without a single interrupted service."

Modernised without missing a beat — Rail Operator