The most basic definition of information technology is the use of technology to solve business or organisational challenges on a large scale. A member of an IT department, regardless of their position, collaborates with others to address both large and little technical issues.
An IT department's key pillars of duty are as follows:
IT governance is a set of policies and procedures that ensures that IT systems are properly managed and aligned with the needs of the enterprise.
IT operations: This is a catch-all category for an IT department's day-to-day activities. This involves assisting customers with technical issues, network maintenance, security testing, and device management.
Hardware and infrastructure refers to all of the physical components of an IT infrastructure. This is a pillar.