How does ITIL define 'Change'?

ITIL defines 'Change' as any addition, modification, or removal of anything that could affect IT services. This definition is broad and encompasses a wide range of activities that can impact the performance, reliability, and functionality of IT services. By including all possible alterations to the IT environment, the definition helps organizations manage risks and ensure that changes are made in a controlled manner.

Understanding this concept is crucial because it underlines the importance of evaluating changes not just based on their immediate impact, but also on their potential effects on the overall service delivery. Consequently, this holistic view aids in minimizing disruptions and ensuring that IT services meet the desired quality and performance standards.

The other options are more limited in scope. A scheduled update specifically pertains to planned changes, while an adjustment made in response to user feedback focuses solely on reactive change management. Similarly, a request made by service users does not encompass changes that may arise from internal processes or other external factors, which are integral to ITIL's comprehensive approach to change management.