Confused about IBM Z Mainframes? Need to understand the z/OS operating system - and in a hurry? Then you've just found the book you need. Avoiding technical jargon, this book gives you the basic facts in clear, light-hearted, entertaining English. You ll quickly learn what Mainframes are, what they do, what runs on them, and terms and terminology you need to speak Mainframe-ese. But it s not all technical. There s also invaluable information on the people that work on Mainframes, Mainframe management issues, new Mainframe trends, and other facts that don t seem to be written down anywhere else. Programmers, managers, recruitment consultants, and industry commentators will all find this book their new best friend when trying to understand the Mainframe world.