Legacy Application Migration & Modernisation in Australia

Appoly does legacy application migration and system modernisation for organisations in Melbourne, Sydney and across Australia, from South Melbourne. A senior team does the work, and delivery is human-led and AI-accelerated.

We start by mapping the system, the data, and the pain points, then expose existing functionality through APIs, MCP servers, or event streams so an AI layer can use it. Where users feel the pain, that layer adds retrieval, summarisation, drafting, and decision support. We replace blocking modules one at a time, with agreed success criteria, while the existing operation keeps running.

In practice

AIM Housing moved a complex, partially digitised set of operations onto a single platform without a 12-month freeze on existing work. We delivered an iterative rebuild covering field operations on mobile, back-office workflow on web, and an AI layer that helps staff prioritise and route work.

How we work

Working software reaches users every fortnight. You own the code, infrastructure, and documentation. We hand those over cleanly, without lock-in or bespoke frameworks.

Exposing existing functionality through MCP sits with MCP Server Development. Putting a model inside a product you already run is AI Integration. Replacing a blocking module is Custom Software Development. If a legacy system holds personal information, Privacy Act duties, including the Australian Privacy Principles, apply to what the AI layer can read.