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Usability
Research all you need to know about Usability so you can make an informed decision.
Usability is now recognized as an important software quality attribute, earning its place among more traditional attributes such as performance and robustness. Usability is a term used to denote the ease with which people can employ a particular tool or other human made object in order to achieve a particular goal.
When evaluating user interfaces for usability, the definition can be as simple as the perception of a target user of the effectiveness (fit for purpose) and efficiency (work or time required to use) of the Interface. Usability testing is a means for measuring how well people can use some human made object (such as a web page, a computer interface, a document, or a device) for its intended purpose. In human computer interaction and computer science, usability usually refers to the elegance and clarity with which the interaction with a computer program or a web site is designed.