New and emerging Technologies, Digital Transformation and the modernisation of computing platforms are at the forefront of company’s mind as they take an exciting look at how projects for artificial intelligence, machine learning, automation, cloud migration and even the use of drones can help them to achieve their core vision.

However, against this backdrop, the mainframe remains industry’s premier data server for mission-critical workloads:

  •  220 BILLION lines of mainframe application code are in use today, and 5 billion more are added every year. This represents multiple decades of investment in business rules and process logic;
  • 80% of enterprise data and 71% of all Fortune 500 companies’ core businesses reside on a mainframe;
  • 30 BILLION mainframe transactions occur every day;
  • The mainframe still powers 92 of the world’s top 100 banks and 23 of the top 25 global retailers.

For years, companies have been battling with the question of the mainframe, `should I stay or should I go? `

As mainframe developers experienced with procedural languages retire at increasing rates, and the cost of maintaining the mainframe rises steadily, organisations are justifiably nervous about the future. These organisations need a strategy that embraces agile development and the cloud yet balances with mainframe environments until a full modernisation of their systems can be completed.


Replacing legacy applications and systems with systems based on new and different technologies is one of the information systems (IS) professional’s most significant challenges. As enterprises upgrade or change their technologies, they must ensure compatibility with old systems and data formats that are still in use.

Every technology company has a viewpoint and many consulting and outsourcing companies have provided their perspective, but their views are often tainted by their future business models and not the business model that really matters – their customers. You cannot separate your mainframe-based systems from your business goals and outcomes, as any decision to modernise this platform is really a business decision.

NWT is here to help by helping to guide the business through a difficult decision process and investment. We will not be influenced in recommending the right path even if that means maintaining a mainframe environment for certain applications because of the risk of migration to the business or the cost effectiveness of the approach. It is important that the business impact of any Migration plan is understood especially around the costs, not just of the migration but the ongoing costs of the environments and the future impact on the business.

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