IDMS and ADS/O Migration

Our Automated ADS/O Refactoring solution delivers modern Cloud-enabled applications and databases that are functionally equivalent to their legacy counterparts, eliminating the hassle and expense of ADS/O, IDMS, ADSA, and the mainframe. This reduces cost, allows for deeper integration, and enables customisation to meet business requirements.

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Discussing the 2022 Mainframe Modernisation Report

60 minutes

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Why modernise?


Scarcity of domain expertise

Developers who understand ADS/O, ADSA, IDMS, and mainframe technology are reaching retirement age and no one is trained to replace them, resulting in a steadily diminishing talent pool. As this shortage grows, the costs and risk of relying on these technologies will continue to rise.

Limited flexibility

Companies are rapidly moving to modern environments and practices such as DevOps and the Cloud. However ADS/O, ADSA, IDMS and the underlying systems that support them were not designed for modern IT, resulting in difficult integrations and limited flexibility.


Exorbitant costs

Mainframes running ADS/O, ADSA, and IDMS cost as much as 4,500 per cent more to operate than equivalent Cloud counterparts. This figure is compounded by the rising licensing and maintenance fees for these specialised technologies. 

Automated ADS/O Refactoring


Dealing with pre-relational network databases has long been the domain of specialist DBAs. Unfortunately, this talent pool is shrinking rapidly as IDMS specialists reach retirement age, creating scarcity, driving up maintenance costs, and compounding risk. As companies seek to migrate away from IDMS, they must also account for ancillary components such as ADS/O, an abstraction tool used to develop modular applications using IDMS databases, when making the shift.

Our Automated ADS/O Refactoring solution provides a turnkey modernisation of your ADS/O dialogs to object-oriented Java or C#, and your associated IDMS databases to relational models deployed to the Cloud or on premises. This service also includes IDMS-based application components such as process modules, maps, ADSA structures, edit and code tables, automatic editing, IDD messages, scratch and queue processing, and IDMS-DC language subroutines.

Our solution preserves the benefits of legacy systems while empowering organisations to leverage the advantages of newer platforms, especially the Cloud. This unlocks a whole new world of automation and scalability from automated testing to quality assurance, and the ability to leverage containerised deployments and orchestration with Docker and Kubernetes.

Refactoring ADS/O and its related components to object-oriented Java or C# presents many challenges. As such, our Automated ADS/O Refactoring solution was designed with the following requirements in mind:

  • Refactored applications must remain functionally equivalent to their original counterparts
  • Refactored applications must be easily maintainable, attain SonarQube A ratings, and follow object-oriented concepts and paradigms
  • Refactored applications should perform as well as, or better than, the original applications
  • Refactored applications should be Cloud-ready and delivered using a standard DevOps toolchain and best practices

Learn more

Over 35 years of ADS/O, ADSA, IDMS, and mainframe modernisation experience

More than 500 successful modernisation projects completed

Over 2.5 billion lines of code refactored through automation

Intelligent modernisation, unparalleled experience


Additional resources to help you modernise



Modernising GE Capital's environment

We completed the assessment, ADS/O refactor to COBOL, database design and data migration which resulted in reducing run costs by 66%.

Read case study





How to begin your modernisation journey

By joining this webinar you will discover how assessments provide stakeholders with valuable insight to inform mainframe modernisation decisions.

Watch on demand





2022 Mainframe Modernisation Report

Exploring the impact of the new era of digitalisation and change on the current state of legacy systems and organisations' modernisation plans.

Read report



Read blog angle-right-solid.svg

02 Dec 2022 by Tim Jones, Managing Director of Application Modernisation, Advanced

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21st Oct 2022 by Tim Jones, Managing Director of Application Modernisation, Advanced

Best practices for ADSO conversion

Following the recent successful conversion of a large financial institution from ADSO to a modern platform, here are your options for your own success.

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05 Sep 2017 by Rob Anderson, Vice President of Marketing and Product, Advanced

News & Opinions

BLOG // 13-02-2024

How DevOps is influencing mainframe modernisation strategies

by Tim Jones, Managing Director - Application Modernisation

How DevOps is influencing mainframe modernisation strategies