WORK  /  ESTABLISHED LOCAL BUSINESS

Retiring a fifteen-year-old system without stopping the business

A staged replacement of the legacy application everything else quietly depended on.

Sample content · replace with a real engagement

Problem

A Microsoft Access-era application sat at the centre of daily operations. The person who built it had left years before; changes were risky, integrations were manual exports, and it couldn't be reached securely from outside the office. Replacing it in one 'big bang' was the obvious idea, and the wrong one.

What changed

The legacy system is gone, but it left in stages, not in a single weekend of held breath. Each part of the business moved onto the new platform when its data was verified and its users were ready. The platform is secure, remotely accessible and integrated with the tools around it.

What Brise did

  1. 01

    Reverse-engineered the real business rules from the legacy system and the people using it

  2. 02

    Designed a modern platform architecture with the legacy data model mapped, cleaned and migrated in stages

  3. 03

    Built module by module, retiring the old system incrementally behind a compatibility layer

  4. 04

    Verified every migration step against live legacy data before switching users over

  5. 05

    Operate the platform today, with a roadmap the business owns

Outcome

  • Fifteen years of records migrated with verification, nothing lost in translation

  • Secure remote access for the first time, so the office is no longer the security perimeter

  • Integrations replaced manual export-import routines

System notes

Staged migrationCompatibility layerModern web platformSecure remote access

Next case study

A secure portal for sensitive client records

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