Which is an input to the service value system?

Comprehensive and Detailed Explanation From Exact Extract of ITIL 4 Managing Professional Transition:

In ITIL 4, the Service Value System (SVS) transforms inputs into outputs through the use of various components.

The input to the SVS is opportunity and demand.

Demand refers to the need or desire for products and services from internal or external consumers.

Opportunity represents options or possibilities to add value.

The SVS uses this input to produce value as the output.Therefore, Option D – “A need from consumers for new or changed services” – accurately describes an input into the SVS.