The advancement of entities that perform on the market scene have need to minimize business costs and rationalize use of various resources. They are encouraged to do so by the pressure of the competitive environment in which they operate. The paper explains the basic principles of creating a Lean UX system. Beginning is oriented towards fundamental principles that have been set as a guide for development and each of the stated principles has been elaborated. In the basic shifts, Lean Startup and the Agile approach were covered as the space next to which Lean UX is located and exists in their vicinity. We are talking about design, as part of the starting point when a work task is given, towards the creation of a solution. After thatits been discussed about concepts of hypothesis, assumption, MVP, which constitute the initial procedures in the movement of Lean UX execution. Through their application, research areas and their interpretation are necessary for iterative cycles of product creation. The paper ends by describing changes needed within company for Lean UX to take root in that environment.