14 providers · Australia

Application Modernisation Providers in Australia

The application modernisation market in Australia serves the country's banking and superannuation and mining and resources sectors as well as the broader enterprise IT estate concentrated in Sydney. Application modernisation providers help enterprises evolve legacy applications into cloud-native, maintainable services. The work spans assessment and decomposition of monoliths, refactoring to microservices, container migration, mainframe modernisation and database migration. TechVendorIndex tracks 14 providers actively delivering application modernisation engagements in Australia, drawn from global systems integrators, regional champions and specialist boutiques.

About application modernisation in Australia

Legacy modernisation, re-platforming and cloud-native rebuild. Buyers in Australia typically engage providers in this category to support transformation work tied to banking and superannuation and mining and resources priorities, with delivery shaped by local obligations under the Privacy Act 1988, the APRA CPS 234 cyber resilience standard, the Security of Critical Infrastructure Act and the Essential Eight from the ACSC.

Top application modernisation providers in Australia

The 14 firms below are ranked by verified delivery presence in Australia, with focus and rating drawn from TechVendorIndex verified reviews. No vendor pays for placement.

Provider
Focus in Application Modernisation
Rating
Reviews
Accenture Australia
HQ: Sydney · BFSI, government, cloud
Legacy modernisation and cloud-native rebuild
4.2
1,180 reviews
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Deloitte Australia
HQ: Sydney · Cyber, ERP, advisory
Legacy modernisation and cloud-native rebuild
4.3
980 reviews
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DXC Technology ANZ
HQ: Sydney · Managed services and modernisation
Legacy modernisation and cloud-native rebuild
3.7
720 reviews
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Telstra Purple
HQ: Melbourne · Network, cyber, cloud
Legacy modernisation and cloud-native rebuild
4.0
620 reviews
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Infosys Australia
HQ: Melbourne · Banking and application services
Legacy modernisation and cloud-native rebuild
4.0
540 reviews
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TCS Australia
HQ: Sydney · BFSI and application services
Legacy modernisation and cloud-native rebuild
4.0
580 reviews
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Wipro Australia
HQ: Sydney · Cloud and managed services
Legacy modernisation and cloud-native rebuild
3.9
480 reviews
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Kyndryl Australia
HQ: Sydney · Infrastructure managed services
Legacy modernisation and cloud-native rebuild
3.8
420 reviews
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Mantel Group
HQ: Melbourne · Cloud, data, design
Legacy modernisation and cloud-native rebuild
4.4
320 reviews
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Versent
HQ: Melbourne · AWS-native cloud and security
Legacy modernisation and cloud-native rebuild
4.3
280 reviews
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Datacom
HQ: Sydney / Auckland · Government and managed services
Legacy modernisation and cloud-native rebuild
4.0
460 reviews
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Capgemini Australia
HQ: Sydney · SAP, engineering, public sector
Legacy modernisation and cloud-native rebuild
4.0
380 reviews
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CGI Australia
HQ: Canberra · Public sector and defence
Legacy modernisation and cloud-native rebuild
4.0
320 reviews
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KPMG Australia
HQ: Sydney · Cyber and cloud advisory
Legacy modernisation and cloud-native rebuild
4.1
460 reviews
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Application Modernisation market overview in Australia

Within the broader AUD 132 billion enterprise IT services market in Australia, application modernisation is one of the more active disciplines, growing roughly in line with the 5.2% headline expansion of the wider services market. Demand is concentrated in Sydney and Melbourne, where the largest banking and superannuation and mining and resources buyers maintain dedicated programme teams. Procurement decisions are shaped by the fact that Australia is a market dominated by four major banks, the federal government, and large miners, with cloud sovereignty requirements driving AWS and Azure region investment in Sydney, Melbourne and Canberra. AI-assisted code transformation tools have changed the economics of legacy modernisation in Australia, particularly for COBOL and older Java estates. Buyers increasingly choose strangler-fig patterns and incremental decomposition rather than big-bang rewrites. Mid-market buyers in Australia increasingly favour specialist firms with deep domain expertise over generalist consultancies, while the largest programmes continue to be awarded to the multinational integrators with global delivery models and embedded banking and superannuation practices.

How to select a application modernisation provider in Australia

Use the following criteria to shortlist providers before issuing a formal request for proposal. Most procurement teams in Australia weight references and operating-model fit more heavily than headline rate cards.

Typical engagement model

Assessment phases are typically fixed-fee (USD 100,000 to USD 500,000) and run 6 to 12 weeks. Modernisation programmes proper run 12 to 36 months depending on estate complexity, on a mix of fixed-fee and time-and-materials with milestone gates.

Pricing should always be benchmarked against at least three references in Australia at comparable scope. Engage independent advisory support before signing multi-year contracts above USD 5M annual contract value.

Related categories and regions

Compare the application modernisation market in Australia with other service lines in the same country, or with application modernisation in other markets covered by TechVendorIndex.

Frequently asked questions

Should we rewrite or refactor legacy applications in Australia?
Refactor preserves business-rules investment and is usually cheaper. Rewrite is justified only when the application no longer serves the business model or when the existing technology stack carries unacceptable security or talent risk.
How long does mainframe modernisation take in Australia?
Targeted modernisation of a single mainframe workload runs 12 to 24 months. Full mainframe exit programmes typically take 4 to 7 years for enterprises in banking and superannuation given regulatory testing requirements.
Can AI accelerate modernisation in Australia?
AI tools can accelerate code translation, test generation and documentation extraction by 30 to 50 percent. They do not yet replace domain expertise on business-rules interpretation or integration design.
What is the typical cost of a modernisation programme in Australia?
Programme costs scale with estate complexity. Mid-market application portfolios modernise for USD 5M to USD 20M; enterprise portfolios with mainframe content run USD 50M+ across multiple years.
Last updated: May 2026
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