In the era of digital economy and continuous change the success of any organization depends on the leadership team. One of the most challenging and important role to hire in the leadership team is the CTO role. The challenge for most CEOs is what are the top skills that are most important for the CTO to be successful with their organization. Following are three phases of fast-growing company as described by the Stanford School of Business. In my career I have experienced these stages, from early to late. This graph gives a good overview for any CEO who is looking to hire or promote within to the CTO role.