An old system replaced, with no downtime.

The system still worked, which was the problem. It ran the business, everyone feared touching it, and every year it got slower, more expensive to host, and harder to change. A full rewrite had been considered twice and rejected twice, both times for the same reason: nobody could afford the system being down while its replacement was built.

This is the migration pattern the studio has run on its own platforms as well as client systems: the move happens in slices, and the system never stops.

The replacement was incremental by design. The system was mapped into slices, each slice rebuilt on the modern stack and run side by side with the old one until it proved itself on real traffic. Data moved continuously between the two during the transition, so either side could take over at any moment.

Each phase paid for itself before the next began: lower hosting costs, faster pages, manual workarounds retired along the way. The final switchover was an anticlimax on purpose, a routing change on a quiet morning rather than a weekend of held breath.

Downtime during the switchover: zero. The business ran through the entire migration, and most of the team only noticed the system getting faster.

Running costs dropped with the move to current infrastructure, and changes that used to be scheduled around fear are now ordinary work.

If a rewrite has been quoted and rejected because the business cannot stop, this is the other way to do it.

See the Modernize service