Modernizing a 10-Year Legacy Clinical Platform for Its Next Decade of Growth in the Age of AI Without Disrupting Hospital Operations

How an enterprise healthcare CEO future-proofed his legacy application (Rezibase) for the next 10 years of growth—without disrupting hospital operations in Australia & UK.

Industry: Medical
Type: Enterprise
Client: Cardiobase
Technology: Web
Location: Australia

Context

Enterprise healthcare · Legacy Application Modernization

VB desktop system transitioning to a modern cloud-based React web platform serving hospitals across Australia, US and UK

The Problem

Rezibase had successfully served respiratory and sleep labs for over a decade as a desktop application. However, healthcare expectations evolved:

Legacy software didn't fill the new workflows demanded by evolved healthcare needs
UX standards improved across clinical systems
Hospitals increasingly required cloud-based access as inter-department data sharing has become essential
Multi-location collaboration and remote workflows became normal

To remain competitive and grow the business for the next 10 years, Rezibase needed a full modernization of its UX and frontend architecture—while preserving clinical integrity and operational continuity.

The CEO quietly questioned whether his organization had the internal capacity and transformation expertise required to modernize the platform at production depth without disrupting hospital operations.

Transformation

Before

Stable but aging desktop architecture
UX expectations outpacing legacy interface
Expansion ambitions constrained by deployment model
Internal team focused on maintenance, not transformation
Platform reliability strong, but long-term scalability limited

After

Production-grade React web application
Cloud-based access supporting distributed hospital teams
Modular frontend architecture designed for expansion
Modern UX aligned to real clinical workflows
Multi-hospital deployment across Australia and the UK
Platform maturity enabling NHS expansion and respiratory collaboration with EPIC

This was not a cosmetic upgrade.

It was structural modernisation for the next growth phase.

Why This Was Hard to Fix?

Translating complex clinical workflows into intuitive UX
Rebuilding frontend architecture while maintaining functional integrity
Delivering incrementally under real operational constraints

The existing team had deep institutional knowledge and maintained the legacy system effectively. However, a full-scale architectural transformation required:

Dedicated modernization bandwidth
System level design discipline
Coordinated module-by-module execution

This was a transformation, not maintenance.

The Approach

We applied our Visibility-First Product Execution approach to reduce uncertainty early.

Execution Steps

1Audited legacy workflows and mapped modernization scope
2Structured delivery module-by-module to avoid operational disruption
3Preserved backend systems while rebuilding frontend architecture
4Introduced design system discipline for long-term scalability
5Validated each module in real operational context before expansion

From there, execution scaled steadily over 20 months.

Outcome Stats

With CARTE BLANCHE

Better Product Design Decisions

Achieved through disciplined module sequencing and reusable frontend architecture across QC, Patients, RFT, Reporting, Appointments, Templates, and Roster.

Expansion-Ready Architecture (NHS + EPIC Collaboration)

Achieved by modernizing the platform into a vendor-neutral, cloud-based system capable of supporting cross-market growth initiatives.

Multi-Hospital Deployment Across Australia & UK

Achieved by designing for production constraints rather than internal demos.

20-Month Sustained Modernization Program

Achieved by structuring delivery incrementally while maintaining operational continuity for live hospital environments.

Deliverables

MVP Design & DevelopmentUX/UI Audit & DesignWeb Application DevelopmentTesting/QACloud ArchitectureCI/CD

Technology Stack

React

TypeScript

Hasura

MobX

Tailwind

React AriaAG GridTiptap

Flask

Heroku

Docker

Sentry

Traefik

SymPy

Apollo

Key Features

Quality Control Management
Patient Records Management
Clinical Reporting & RFT workflows
Appointment Scheduling & Templates
Staff Roster
Vendor-neutral clinical data handling
Cloud-based remote accessibility

“This modernization allowed us to evolve the platform without compromising the reliability our hospital clients depend on. It positioned us for the next phase of growth.”