As an advocate of user experience (UX) I don’t believe that anyone should ever have to justify the business case for UX; unfortunately that is an idealistic viewpoint. With UX falling under the marketing umbrella, it’s understandable that businesses want to know what their investment is getting, as a tangible benefit. This is even more true for those who don’t understand UX.
Fortunately, UX is easy to measure, which means it’s easy to show return on investment (ROI). The infographic below shows this is more detail.