To become a CIO, focus on both business and technical skills. Understand business operations, expand your perspective, and engage in cross-functional projects. Develop communication, leadership skills, and a grasp of business finance. Network strategically and avoid overemphasizing technical knowledge at the expense of business thinking. Aspire to impact rather than merely a title.
https://www.informationweek.com/it-leadership/want-to-become-a-cio-here-s-what-you-need-to-know