ModPaaS , developed by Modern Systems is a purpose-built, customisable Cloud solution that enables highly collaborative participation throughout a legacy application modernisation project.


You can analyse mainframe legacy code, understand the complexities and dependencies of interrelationships and mine business rules. It also gives you access to our modernisation solutions ‘as a service’ in a secure Cloud-based environment, with assistance from our modernisation specialists, or in a fully managed approach.

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Understanding key issues


Controlling project cost

The knowledge gained from using ModPaaS reduces the scope of existing applications and refines the modernisation disposition strategy. Right-sizing these projects reduces costs too.

Unmaintainable code lines

Over time, code can become complicated. We can streamline the code on three levels – source code file, paragraph / section and line of code – simplifying the maintenance of applications.

Lack of legacy system visibility

Full visibility, including business rules, reports, documentation and application categorisation, puts you in control of your IT while ensuring it supports your organisation’s initiatives.

How ModPaas can help you

Make a Difference

ModPaaS Availability

ModPaaS is a cloud-agnostic solution that allows for highly collaborative participation throughout the journey of a legacy application modernisation project. Get started with one of the cloud-provider platforms listed below.


Get started today on your legacy modernisation by accessing ModPaaS on the AWS Marketplace

Get Started


Visit the Microsoft Azure Marketplace to begin your cloud journey with our ModPaaS service

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Get a jump start on your digital transformation with ModPaaS in the Oracle Cloud Marketplace

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Get started on your modernisation journey with ModPaaS on the Google Cloud Platform Marketplace

Get Started

Additional insights to help you transform


  • Reimagine legacy applications

    Tackling the challenge and impact of legacy systems on digital transformation strategies.

    Read Whitepaper
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  • Analyst Firm EMA Recommends Advanced

    Learn why EMA positions Advanced as a leader in Application Modernisation and why they recommend ModPasS.

    Whitepaper Read Whitepaper

News & Opinions

Gordon Wilson, CEO Advanced
News and Blogs Generic 46

Why Itanium’s imminent demise further increases the risks associated with OpenVMS applications

The OpenVMS operating system was developed back in the 1970s, and it continues to drive numerous mission-critical business systems worldwide. These often custom core applications are invaluable to organisations across industries ranging from nuclear power to international financial services. Large sums of money and decades of time have been invested in these OpenVMS applications to meet very specific needs - but end-of-life is looming large and planning for their future is now a matter of urgency.

News and Blogs Generic 53

What is the true cost of legacy applications on your business?

Many organisations rely on an assortment of legacy systems to keep their business operating. However, this dependence on an ageing infrastructure is becoming ever more expensive. There are plenty of statistics suggesting that maintaining and operating legacy applications consumes anywhere from 60 to 80 per cent of corporate IT budgets – money that could be redirected to digital innovations that would bring greater competitive advantage.

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