The Context of Use is the actual conditions under which a given artifact/software product is used, or will be used in a normal day to day working situation. It is important to carry out usability tests, prototyping sessions, meetings, user studies and other "user-dependant sessions" in the context of use to get as high ecological validity (see this) of your findings as possible.
Open Access - Link to us!
We believe in Open Access and the democratization of knowledge. Unfortunately, world class educational materials such as this page are normally hidden behind paywalls or in expensive textbooks.