Four opposing forces complicate digital experience delivery: the need for speed of initial delivery and ongoing change, the need to deliver experiences that are coherent and familiar across channels and lines of business, the need for cost efficiency, and the need for high quality. This report introduces Forrester's digital experience reference architecture, a tool for balancing the four opposing forces for effective digital experience delivery. Application delivery teams and solution architects can use Forrester's model to drive quality and speed into today's digital experience deliveries and also to engage business leaders in preparing for tomorrow's digital experiences.