Mainframe Open Education Project
  • Welcome: Learn & Contribute to MOE
    • MOE Vision, Mission and Content Phases
    • Who Can Contribute?
    • Contributor Log In
    • Earn A Contributor Badge
    • MOE Management System
    • MOE Events
    • Project Support
    • Legal Disclaimer, Copyright and License
    • Code of Conduct
    • Project Governance
    • Why MOE
  • Introduction: What is Enterprise Computing?
  • Chapter 1: What is a Mainframe Today?
    • Role of the Mainframe Today
      • Mainframe and the Cloud
      • Enterprise Computing
      • Hybrid Cloud
    • Who Uses the Mainframe and Why
    • Mainframe versus Server
    • Mainframe Basic Architecture & Components
    • How the Mainframe Works
    • Mainframe Security Myths
    • Mainframe Evolution
    • Mainframe Modernization
    • Video: ITs Best Kept Secret
    • Get Ready: Talk Like a Mainframer
    • Looking Back: The First 50 Years of Mainframe
  • Chapter 2: Foundational Technology
    • Brief Introduction to z/OS
    • TSO/E, ISPF, and UNIX System Services (USS): Interactive facilities of z/OS
    • Data Sets and How They Work
    • Job Control Language and System Display and Search Facility
      • Understanding the JCL(Job Control Language)
        • Understanding the JOB Statement
        • Understanding the EXEC Statement
        • Understanding the DD Statement
        • Creating a Physical Sequential (PS)
        • Understanding Libraries in JCL
        • Understanding Instream Procedures, Cataloged Procedures, and Symbolic Parameters in JCL
      • Utilities
        • IEBCOMPR
        • IEBGENER
          • Copying Between Sequential Datasets and PDS Members Using IEBGENER
          • Generate PDS member while copying
          • Copying a UNIX File to a PS File
        • IEBCOPY
          • IEBCOPY selective copy using select statements
          • IEBCOPY Exclude members while copying
          • IEBCOPY renaming member while copying
      • GDG
        • GDG parameters
        • GDG base
        • GDG Generation
          • Referencing GDG Generations Using Relative Numbers
        • Alter and Delete GDG
    • Enterprise Software Development and Implementation
    • Programming languages for Mainframe
    • Modern Application Management
    • Video: System Overview
    • Video: MVS Using Dynamic Allocations
    • Article: Red Hat OpenShift 4.7 on IBM Z Is a Game Changer for Container Orchestration and Managemen
    • IBM z16
  • Chapter 3: Roles in Mainframe
    • Roles and Categories
      • Category Definitions
  • Chapter 4: Deeper Dive in Role Chosen
    • IT Operations and System Support and Services
    • IT Business/Software Product Application Development and Support
    • IT Software Engineers
    • IT Architects
  • Chapter 5: Career Path Opportunities
    • Learning Programs
    • Job Opportunities
    • Career Event Calendar
    • Open to Hire
  • Mainframe Events and Conferences 2024
  • My Mainframe Journey: From Student to Professional
  • Backlog on Topics
  • Additional Community Resources
    • Communities
    • Courses, Tutorials, Manuals
    • Education Programs
    • IBM Mainframe Timeshare Services
  • Digital Certificate Badges
    • z/OS Mainframe Practitioner
  • Reviewer List
  • Modern Mainframe
    • What is a modern mainframe environment?
    • z/OSMF
      • What is z/OSMF?
      • Why it is important in a mainframe shop
      • z/OSMF Learning Materials
    • Zowe
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  1. Chapter 1: What is a Mainframe Today?

Role of the Mainframe Today

How businesses benefit from the use of mainframes

PreviousChapter 1: What is a Mainframe Today?NextMainframe and the Cloud

Last updated 10 months ago

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Curious about who relies on mainframe technology? You may not realize it, but mainframes are part of our everyday lives. Have you ever used an ATM to manage your bank account? If so, you've interacted with a mainframe computer.

Mainframes hold a significant role in the modern business landscape, particularly within the world's largest corporations. While various forms of computing are integral to business operations, mainframes remain essential in today's e-business environment. They are the backbone of many critical sectors, such as banking, finance, healthcare, insurance, utilities, government, and countless other public and private enterprises. Let's dive deeper into the world of mainframes and discover their diverse applications.

Read the chapter "Who uses mainframes and why do they do it?" below and answer the following questions:

  1. Who are the primary users and beneficiaries of mainframe technology in modern business?

  2. What are the fundamental strengths and features make mainframes essential in contemporary information processing?

Who uses mainframes and why do they do it?
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