This document discusses how to integrate UX design into agile development teams to build great features without conflict. It presents two models for allocating UX resources: the internal agency model and cross-functional model. The best approach depends on whether designers outnumber developers or vice versa, and the autonomy of development teams. The document also explains how to align UX and development work through practices like having designers attend daily stand-ups and retrospectives, using a "UX required" sprint board column, and employing design tools and systems. When done correctly through open communication, UX can improve products and help teams achieve more as collaborators.