Does the CIO or IT director have to have a strong technical(ERP System, Infrastructure and information Security) background or not?

CIOs often have an IT background, with degrees in computer science, software engineering, or information systems. Moreover, business acumen is a must. That’s why the current tendency is for CIOs to be promoted from business departments rather than IT. 

Essential skills for the position are:

Strategic planning

Software development management

Leadership

Project management

Network and relationship building

 Change management

 Business and financial acumen

sure , it is better to helps him make the right decision

IT directors typically have an extensive background in both information technology and leadership positions. The most common career path is for one to begin as a lower level IT employee. With a few years of experience, you may progress to a management position. Many companies will hire lower level IT managers with only a few years of experience. To secure a promotion to IT director, you typically need five to ten years of management experience in an IT field.