IT leaders have gotten the message: To successfully perform their jobs, they need more than technical skills. They also need general business acumen, industry knowledge, and accounting talent. Some expertise in marketing, operations, cybersecurity, and other functional areas is important, too. That has been the message coming from veteran CIOs, executive advisors, and management consultants in recent years. Such advice, however, speaks only to what CIOs need to successfully manage the IT department — that is, to deliver operational excellence and meet key performance requirements. To really st…