Enterprise · 2023

Modernising the system everyone depends on.

ClientAtlas IndustriesIndustryEnterpriseYear2023ServicesEnterprise, Web App, Migration

The challenge

Atlas was running on a 22-year-old ERP. Every department had workarounds. The cost of a single hour of downtime ran into seven figures.

The approach

We executed a strangler-fig migration over 18 months — replacing one module at a time while the legacy system kept running. No big-bang cutover. No business risk.

By the numbers

0 mo

Migration duration

0

Hours downtime

0

Employees migrated

0%

Adoption at 6mo

The process

From discovery to launch.

Discovery

  • Mapped 240 business processes
  • Catalogued 1,800 ERP customisations
  • Risk matrix per module

Architecture

  • Anti-corruption layer over legacy
  • Module-by-module strangler fig
  • Dual-write reconciliation pipeline

Design System

  • Department-specific workflows
  • Accessible at AAA contrast
  • Localised in 9 languages

Engineering

  • TypeScript across the stack
  • Per-module rollout gates
  • Synthetic transactions for safety

Launch

  • Department-by-department go-live
  • Internal champions in every region
  • Legacy decommission, finally
Procurement module — production
The migration completed under budget and ahead of schedule.

Procurement · finance · HR

Migration timelapse

Eighteen months, twelve thousand employees, zero downtime hours. They executed this like it was their own business on the line.

Hannah VossCIO, Atlas Industries
0

Downtime

94%

Adoption

31%

Cost cut

Outcomes

The numbers settled. The story didn't.

The legacy system was fully decommissioned on schedule. Adoption hit 94% within six months of each module's launch. Operating costs for IT dropped 31% year-over-year.

Before / after

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