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Legacy Application Modernisation Services

Modernise outdated applications with our expert-led, risk-free legacy application modernisation services in Sydney.

MYER

Developed and maintained scalable Warehouse Resource Management software.

Anglicare

Mobile app with archibus integration kiosk stand software development.

Visuals2Go

Cross platform mobile & tablet app for disabled people.

NobleOak

A complex financial model with end-to-end and ai customised user journey.

SydneyWater

Custom software integration between sap erp and ineight (project controls software).

Hillsong

Mobile donations form with payment gateway integration.

Metro Finance

Design and developed web application to manage & streamline shifts.

Site360

SaaS platform – Geofenced visitor management & fully customisable workflow forms.

Acorn Rentals

Custom accident replacement vehicle system that automates the entire rental process.

TaxToday

Streamlining instant refunds with highly secure cloud native application.

g-reviews

Expert Legacy Software Modernisation Services to Upgrade, Scale & Secure Your Systems

Legacy systems can quietly bleed your business, draining time and costing money, while also limiting growth. Our end-to-end legacy application modernisation services are specifically designed to help you tackle these issues and to do so with smarter, scalable solutions. At Designpluz, we partner with you to migrate legacy software into better-performing, secure, and future-ready systems that meet the evolving goals of your business.

In Sydney and across Australia, many organisations have a tough time with high maintenance costs, limited scalability, integration challenges, slow system performance, security risks, and several other outdated software risks; and if your systems can’t keep up, your business can’t either. That is why modernising shouldn’t just be an option; it should be mandatory.

Our software transformation services provide the capability to modernise legacy applications with the least amount of interruption to operational activity. You get better performance, less technical debt commitment, and the flexibility to integrate with modern platforms. Unlock the full potential of your technology and keep your business future-ready with Designpluz.

Modernise Your Legacy App Today
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Our commitment to client satisfaction is evident through our genuine 5-star google reviews

legacy software modernisation services

Our Numbers Tell Our Story

We design and develop high-caliber mobile apps and websites.

100
Five-star Google reviews showcasing our commitment to excellence.
40
In-house technology experts driving innovation and quality.
50,000
Australians use our software every day to streamline their work
1,000
Successful projects delivered with precision and expertise.
100
Australian-owned family business with 15+ years of proven reliability
40
Processed annually through our software, empowering businesses.

Our Legacy Modernisation
Services Include

Application Modernisation

Application Modernisation

We re-architect, rebuild, and enhance current applications to enhance performance, scalability, maintainability, and user experience without disrupting core business processes, where the legacy system will likely be deeply embedded.

Cloud Migration

Cloud Migration

We offer legacy to cloud migration via modern cloud platforms like AWS, Azure, or GCP for greater scalability, flexibility, and cost efficiency.

UI/UX

UI/UX Modernisation

We modernise legacy systems for UI/UX through audits, design work, updates, and usability/accessibility improvements. This delivers modern, intuitive, and responsive digital experiences across web and mobile platforms.

Data Migration

Data Migration

We help migrate and consolidate your data from legacy systems to the new platform securely, efficiently, and with application integrity and consistency, and minimise downtime.

Security Improvement

Security Improvement

We help to reinforce your security protocols and patch vulnerabilities to improve compliance with cybersecurity requirements and standards, even when dealing with limited or missing documentation in legacy systems.

Application Reengineering

Application Reengineering

Re-engineering applications means building them from the ground up. We leverage modern frameworks to maximise flexibility, production performance, and governance.

Mobile and Tablet Compatibility

Mobile and Tablet Compatibility

We modernise your legacy applications to mobile and tablet layouts, usability, and responsiveness to provide a better experience on any device.

Software Integration

Software Integration

Legacy platforms are not compatible with modern APIs and third-party software, which blocks automation and innovation. Our solution bridges the gap to offer future-proof, frictionless integrations.

Why Choose Designpluz for your Legacy
Application Modernisation Service?

Expertise in Modern Tech Stacks

We use .NET Core, Angular, React, and Azure to develop improved legacy software modernisation services that are in line with today's digital standards. We also apply MACH Architecture principles, using Microservices, API-first development, Cloud-native platforms, and Headless systems, to develop modular, scalable, and future-proof solutions.

Customised Modernisation Strategy

Customised Modernisation Strategy

Our Sydney-based developers design tailored plans for legacy application modernisation services that encompass a well-defined process while identifying your legacy application architecture, technology, and business goals. We also address data silos and a lack of centralised processing that often hinders efficiency and decision-making in outdated systems. Where a full rebuild isn't necessary, we follow a maintain and optimise approach, updating only essential components to reduce overhead while extending your system’s operational value.

End-to-End Modernisation Services

End-to-End Modernisation Services

We provide software transformation services with an end-to-end service that encompasses everything from system audits and application re-engineering to deployment and legacy application migration, all under one roof. Our hybrid modernisation approach gradually replaces legacy components while keeping core operations running, minimising disruption, and reducing cost.

Strong Security & Compliance Focus

Strong Security & Compliance Focus

We implement enterprise-grade security, secure APIs, encryption, etc., to ensure that your modernised legacy system utilises best practice processes and meets Australia's data and compliance requirements.

Post-Launch Support & Scalability

Post-Launch Support & Scalability

Our work doesn’t end at deployment. We offer ongoing support, performance tuning, and identification of scaling options that ensure your legacy system modernisation is foolproof and flexible, even in environments where there’s a scarcity of skilled developers familiar with legacy tech.

The core technologies powering our software solutions.

Building future-proof bespoke software tailored to specific business needs requires the best technologies available.

Web Applications

HTML
CSS
Javascript
Angular
React

Mobile Apps

React Native
iOS
Android

UI/UX

Figma
XD
Microsoft .NET
C#
REST API
Microservices
Docker
Python
PHP
Django
SQL Server
Power BI
Azure Data Lake
MySQL
PostgreSQL
Blob Storage
Amazon S3
Amazon SES
SendGrid
ClickSend
Firebase
Azure
AWS
Google Cloud
DevOps
Power Platform

Benefits of Legacy Modernisation

Improved Performance

Improved Performance

With our legacy application modernisation technologies, your applications are faster and more responsive, eliminating bottlenecks, downtime, and boosting productivity, with faster load times, and with your business performing optimally on all devices and platforms.

Reduced Maintenance Expenses

Reduced Maintenance Expenses

Legacy systems need to be patched. Our legacy technology modernisation solutions assist in reducing technical debt and maintenance costs by replacing or refreshing interruptions from volatile, legacy components, so that freed-up IT budgets and resources can be targeted at innovation and strategic growth.

Improved Security & Compliance

Improved Security & Compliance

Legacy systems are most often linked to vulnerabilities. We help to make your line of defense stronger and get you aligned with newer compliance requirements and newer security measures to keep your business in line with evolving data protection regulations.

Seamless Integration Capabilities

Seamless Integration Capabilities

With our application modernisation solutions, you can integrate directly with APIs, CRMs, ERPs, and other business applications in a smooth manner so that your legacy applications sit alongside newer technologies.

Access to Real-Time Data & Analytics

Access to Real-Time Data & Analytics

With legacy system upgrades, you will enjoy uninterrupted access to your real-time business data, leading to better decisions, operational intelligence, and performance monitoring with more advanced analytics, dashboards, and reporting features built into your upgraded system.

Competitive Advantage

Competitive Advantage

New technologies give you the flexibility to innovate and the ability to respond quickly to any disruption in the market. Our legacy software modernisation services prepare your company to compete in Sydney's fast-paced digital economy.

Our Legacy Modernisation Process

A Cross-functional Team to Build a Modernised Product

Step 1

Discovery and System Audit

We start with a complete audit of your current systems to address gaps, technical debt, and opportunities for a seamless enterprise software upgrade of your legacy systems to fit your business.

Step 2

Define Modernisation Goals & Strategy

Collaboration is key to our strategy. We work with you to establish clear objectives and create a custom roadmap for an effective legacy application upgrade aligned with your vision.

Step 3

Application & Data Modernisation

We reengineer application logic, migrate legacy databases, and modernise system architecture using future-ready technologies, secure transformation practices, and a suite of code refactoring services.

Step 4

Testing & Quality Assurance

Our robust testing ensures the upgraded system functions as intended, integrates with new platforms, and achieves the necessary security and compliance requirements after our legacy software modernisation services.

Step 5

Deployment & Go-Live

By integrating DevOps practices into our modernisation pipeline, we ensure faster deployments, continuous testing, and reliable rollouts across every stage of your software transformation.

Step 6

Post Modernisation Support

Our services don’t end once the systems go live. Ongoing support and performance monitoring are the best ways to ensure that the legacy system modernisation continues to provide continual value and business agility.

Frequently Asked Questions

How do I know if my software needs modernisation?

If your system is costly to maintain, slow, or does not support modern technologies, then it might be the right time to look into legacy software modernisation services or full-fledged software transformation services.

Will I lose my existing data during modernisation?

No. Our standard legacy application modernisation services include secure data migration processes that will migrate your data, ensuring that the data is kept safe and migrated without data loss or downtime.

What guarantees the modernised system will be worth the investment?

Our application modernisation services improve system performance, lower long-term costs, and provide upgrades to modernise your system while future-proofing your legacy systems in terms of measurable ROI and business value.

Is it better to rebuild or upgrade my existing system?

It depends on your system’s condition and goals. We evaluate whether refactoring or a complete rebuild offers the best return on investment with the least disruption.

How long does the modernisation project take?

Timelines vary depending on the project. For the majority of legacy software modernisation services, anticipate between 8 and 20 weeks, depending on the system size, complexity, and migration factors.

What is the difference between upgrade and modernisation?

An upgrade means replacement of certain things, but legacy application modernisation services mean you’re modernising your whole system. They are holistic changes that give a better return on investment because you’re getting the components properly aligned for security, scalability, and usability for the future.