What is Mainframe Application System? | HCL Technologies

What is Mainframe Application Systems?


Mainframe Application Systems

What is Mainframe Application Systems?

Mainframe systems definition: Mainframe Application Systems are the various end-user application systems that are hosted on mainframe computers. Mainframe computers and their services are critical for governments and large organizations owing to their capability of processing bulk data more efficiently as well as data security features. Hence, various organizations host their applications on mainframes to ensure data security and seamless data processing. This explains what is a mainframe system and its utility.


Download our Legacy Transformation Services Brochure to understand on how HCL's Integrated IT Solutions for providers and payers are helping global customers to improve their business results.


IT Transformation and Application Development to achieve Platform Transformation at World's second largest food service company. One of the United States largest broad line food service distributor.

For a leading aircraft manufacturer, HCL modernized the client's application stack through migration of 100 tightly integrated legacy applications and re-hosted the Flight Testing Control System with an installation base of over 1000 nodes.


More than ever before, today’s end users are very intolerant of delays in obtaining relevant information, non-interactive Websites, and non-collaborative applications. Naturally, businesses need to incorporate changing user demands and preferences into their IT strategy. Whereas for modern systems that may not be a very tall order, for mainframe systems it is. Although there is a gradual trend to migrate from legacy mainframe system to newer system, the bulk of global business transactions continue to be processed by mainframes, especially in industrialized economies. For that reason, mainframe systems continue to remain relevant to enterprises. Instead of throwing out the baby with the bath tub, mainframe customers are warming up to the idea of mainframe migration and modernization.

One size doesn’t fit all in the context of legacy modernization. There is no single, pre-packaged solution that is right for everyone seeking to modernize their existing mainframe applications. While the traditional legacy modernization and migration methods have their place, “Legacy Rehosting” makes a strong case for itself as a viable modernization solution because of the benefits it provides in terms of reduced migration risk, short implementation time frame, faster ROI and greatly reduced TCO. “Legacy Rehosting” works for enterprises irrespective of their mainframe footprint. It can be leveraged either to completely replace their mainframe system or for partial workload offloading from the mainframe. In either case, the end result is a sizable reduction in their overall mainframe costs.