What is usability?
Usability is often defined as “the extent to which a system, product or service can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use.”
This definition is provided by the International Organization for Standardization (ISO), within the standards 9241-11 (2018) and 9241-210 (2019). However, there are many other definitions of usability to be found - we decided to stick with ISO. The usability methods and measures provided by the Interactive Usability Toolbox are categorized by the framework of ISO TR 16982 (2002). This framework describes method types, their application potential and fittings for different evaluation contexts.