Chief information officer: This person is responsible for IT and computer systems that support the enterprise's goals.
Chief technology officer: This person sets all technology goals and policies within an organization.
IT director: This person is responsible for the function of all of the business's technology tools and processes. This role is commonly called IT manager or IT leader.
Systems administrator: This person configures, manages, supports and troubleshoots a multi-user computing environment. Within an enterprise, this role can be segmented by technology, requiring an administrator or team dedicated to server, desktop, network, virtualization or other components.
Source: Chief information officer: This person is responsible for IT and computer systems that support the enterprise's goals.
Chief technology officer: This person sets all technology goals and policies within an organization.
IT director: This person is responsible for the function of all of the business's technology tools and processes. This role is commonly called IT manager or IT leader.
Systems administrator: This person configures, manages, supports and troubleshoots a multi-user computing environment. Within an enterprise, this role can be segmented by technology, requiring an administrator or team dedicated to server, desktop, network, virtualization or other components
Source: https://searchdatacenter.techtarget.com/definition/IT