Lean UX was Jeff Gothelf’s game changing answer to the problem of practicing UX in an agile environment. In his seminal masterwork, Jeff turned the entire field of UX on its head. The book introduces a series of strategy and alignment activities, which allow UX to operate inside of agile’s cone of uncertainty and rapidly update designs based on user feedback.
Agile focuses on rapid iteration. It releases a new set of shippable increments (features) every 2-4 weeks, evolving a product over time instead of all at once. It‘s based on hypothesis, experimentation, rapid release, and real-time measurement. In Agile there is no editing stage, there is no perfection. As Bre Pettis put it in 2009… done is the engine of more.