Dictionary · Technology Investment Strategy 2015-2018

the system status in the mind of human beings based on their perception of and experience with the system; concerns the attitude that a person or technology will help achieve specific goals in a situation characterized by uncertainty and vulnerability.

The system functions with no/little human operator involvement; however, the system performance is limited to the specific actions it has been designed to do. Typically these are well-defined tasks that have predetermined responses (i.e., simple rule-based responses).

provides objective evidence that the capability provided by the system complies with stakeholder performance requirements, achieving its use in its intended operational environment; answers the question, "Is it the right solution to the problem?" [C]onsists of evaluating the operational effectiveness, operational suitability, sustainability, and survivability of the system or system elements under operationally realistic conditions.

provides evidence that the system or system element performs its intended functions and meets all performance requirements listed in the system performance specification and functional and allocated baselines; answers the question, "Did you build the system correctly?"