For years I have told mainframe security newcomers the same thing: If you want to learn how to attack and defend a system, you need to use that system. Unfortunately, z/OS is not something you spin up on a laptop over lunch or throw into your home lab. Mainframe...
Gil Peleg Co-founder, CEOGeniez AI London, England, United KingdomThis article features Gil Peleg, one of the top four 2026 Influential Mainframers.While others try to modernize around the mainframe, Gil Peleg is building AI inside it. VCs are paying attention. ...
AI for the Mainframe: Turning System Data Into Answers For the past year, nearly every conversation about artificial intelligence and the mainframe has centered on one question: What will AI do to COBOL? Will it modernize legacy applications? Generate new programs?...
The Latest Tuning Letter issue is out now! Subscribers to Cheryl Watson’s Tuning Letter will find the newest issue, 2026 No.1, on our Tuning Letter website. If you are not a current subscriber yet, sign up today! This subscription-only resource is available to both...
How Geniez Is Turning Real-Time Mainframe Data Into Fuel for Modern LLMs Amanda Hendley, Managing Editor of Planet Mainframe, met with Gil Peleg, CEO of Geniez, for a conversation about artificial intelligence (AI)—specifically, the future of AI on the mainframe.Read...
It is exciting to be part of the world of computer performance at the dawn of AI. Many companies are heavily investing in Artificial Intelligence (AI) with only a few crude implementations having materialized thus far. As a performance guy, I can say it is important...
Observability is the vehicle for delivering the next generation of tools to help us regain control. About 15 years ago, I participated in a meeting with customer IT executives to discuss their biggest challenges. I remember one of them describing difficulties in...
Part 4: The outsourcer’s cost structure This is the fourth in a series of blogs about how to follow up on your mainframe outsourcer. Previously I’ve discussed why it is important to follow up on your outsourcer, understanding MIPS and MSU, and the pitfalls of MIPS. In...
Outsourced mainframe customers often lack a clear understanding of how well their outsourcer is managing the mainframe capacity and performance relative to what is optimal for the customer. The customer seldom has access to the data needed to really understand their...
