Infrastructure / Modernisation
Modernising a field operations platform without stopping work
A staged replacement strategy for a business-critical system used by distributed operational teams.
- Year
- 2025
- Headline outcome
- Zero planned operational downtime
The challenge
A decade-old platform had become costly to change, but a big-bang replacement would have put daily operations at risk. The organisation needed a credible route forward and evidence for investment approval.
Our approach
- 01
Measured system boundaries, failure modes and actual usage before selecting technology.
- 02
Separated high-change workflows behind stable APIs and migrated one operational region at a time.
- 03
Created decision records and service measures so governance remained evidence-led.
What changed
- Zero planned downtime across staged migration
- Deployment frequency increased from quarterly to fortnightly
- Clear whole-life cost model for the remaining roadmap