The document outlines 10 principles of Lean UX: 1) Integrate design, product management, and development into one team. 2) Externalize work so it can be discussed and improved. 3) Follow a process of thinking, making, and checking. 4) Make processes repeatable and routine. 5) Solve the right problem. 6) Focus on goals and outcomes. 7) Generate many options. 8) Decide quickly and be willing to change decisions. 9) View ideas as hypotheses to validate. 10) Conduct user research for the best information and inspiration.