Mainframes are easy to overlook amid today’s focus on GPU-powered servers for generative AI and agentic frameworks. Yet these systems, which originated in the 1940s well before personal computers and distributed computing, still power billions of daily transactions for many of the world’s largest banks, credit card processors, and airlines. I recently spent time with Broadcom’s Mainframe Software Division in Boston at its third annual analyst forum and left impressed. The team is relentlessly pursuing what is right for its customers, extending the mainframe platform’s relevance and viability, and facilitating knowledge transfer and skilling to ensure operational continuity. With a continued practice of summarizing my event attendance with three big…