What does the term 'outcome' refer to in the context of ITIL services?

In the context of ITIL services, the term 'outcome' refers to the result that is achieved by using a service. This understanding is crucial because it aligns with the foundational principles of ITIL, which emphasizes delivering value to customers through services. The outcome signifies the end result or the overall impact that a service has on the organization or users, including the achievement of desired objectives and benefits.

This perspective differs from simply focusing on features or specifications of a service, which is denoted in other options. While features may describe what a service can do, they do not encapsulate the value derived from its use. Additionally, milestones in service development refer to specific points in a project's progress rather than the ultimate results of service interactions. Similarly, customer feedback, while valuable for service improvement, does not directly define the outcomes derived from using the service itself. Therefore, recognizing the outcome as the achieved result captures the essence of service value in ITIL.