Use case

Modernising a legacy system onto cloud

A core system still runs the business, but nobody wants to touch it. Moving it without stopping the business is the whole problem.

The situation

An application written years ago still handles billing, or inventory, or claims. It works. But the original team has moved on, the hosting is end-of-life, and every change takes weeks because nobody is certain what else it will break.

Our approach

We start by making the current behaviour visible: mapping the data model, the integrations, and the undocumented rules that live in the code. Only then does a migration plan mean anything.

From there the work runs in slices. We move one bounded capability at a time onto the new platform while the old system keeps serving everything else, and each slice ships behind a switch you can turn off.

What changes

You stop scheduling deployments as events. Your team recovers by following a procedure they have tested, and the next change to that system lands in days.