Task Analysis.

Task analysis is a step-by-step analysis of the users’ task, from their perspective.

How To & Tools: Task
Task analysis (PDF)Prof. Dr. Matthias RAUTERBERG
Task Analysis and Modeling MethodsUsability Body of Knowledge
Task Analysis a UX Designer's Best FriendInteraction Design FoundationJuly 1st, 2019
Task Analysis: The Key UX Design Step Everyone SkipsSearch Engine WatchMarch 27th, 2014
Hierarchical Task AnalysisUX MattersFebruary 8th, 2010