Contextual Design: Design for Life

Holtzblatt and Beyer's contextual design methodology is one of the foundational approaches to bringing field research into product development. The core idea is that you cannot understand users from interviews alone — you have to observe them in the context where they actually do the work, and translate those observations into design through a specific sequence of models (sequence, flow, cultural, artefact, physical). For product direction it is the deepest treatment of ethnographic methods adapted to software work. The book is long and sometimes academic; most teams will find it a reference rather than a read. Pair with Kalbach for visual tools.