What term describes the capability of a software product to meet stated and implied needs under specified conditions?

The capability of a software product to meet both stated and implied needs under specified conditions is best described by the term functionality. Functionality refers to the particular functions or features that a system can perform, which is fundamental when assessing whether a software product fulfills the requirements of its users. It encompasses what the software is supposed to do in terms of behaviors, actions, and operations that it carries out to address user needs.

In contrast, interoperability refers to the ability of different systems or components to work together effectively. Usability focuses on how easy and satisfying the software is to use from the end user's perspective, taking into account aspects like learnability and efficiency. Reliability pertains to the consistency of a software system's performance over time and under specific conditions, including its ability to function correctly without failure. Each of these terms highlights different aspects of software quality, but in the context of meeting both stated and implied requirements, functionality is the most suitable term.