“the CTO is there to guide the board away from making decisive calls that are logical to people with a limited understanding of technology and the market conditions associated with it, but are clearly dangerous to somebody in the know. For example, buying a new proprietary HR and finance system on a five-year deal from a supplier that the department has already worked with for ten years might seem sensible to a non-technologist. The fact that the system is a complete pain to use (and ruinously expensive) may just about crop up on the leadership radar. What may not is the fact that systems like this are likely to become commoditised–which is to say, cheap and easily swapped with similar alternatives–in less than five years. Through a combination of ignorance and inertia, the department would be locking itself into the wrong deal, and constraining itself strategically as a result. A CTO stops this kind of mistake.”