Mainframe 101 – What Exactly Is a Mainframe? | Episode 1 #mainframes #technology

What exactly is a mainframe, and why are companies still using it after decades? In Episode 1, we start from the very beginning and break down mainframes in simple terms — what they are, where they are used, why they are so reliable, and why they still matter in today’s cloud and AI era. No complicated jargon. Just a simple introduction to the technology that quietly powers a huge part of the world. 📌 In this series: • Mainframe basics • z/OS and system architecture • COBOL, JCL, CICS & DB2 • How mainframe applications really work • Mainframe modernization & cloud migration • Where AI fits into the future of mainframes 👉 Subscribe and follow the series if you want to understand mainframes from the ground up. #Mainframe #Mainframe101 #COBOL #zOS #MainframeModernization #Technology #Cloud #AI