““Type 1 leadership was about functional requirements and individual systems; the focus was operational. Type 2 was less about managing individual projects and systems, more about managing portfolios of projects and infrastructures, as well as playing a senior team leadership role; Type 2 leaders left the details of managing operational functions and individual systems to others, though they remained accountable for it all working. Type 3 evolved into a job of managing strategy and resources, leaving the details of management of portfolios and infrastructure to others.””