User story mapping is used as a way of fleshing out the walking skeleton while keeping the golden rule of “breadth and not depth” in mind. Focusing on depth of the story map yields a broader spectrum of features and capabilities. The flip-side is a deep spectrum with limited features or capabilities.
On completion of this exercise the product owner and his value management team is able to prioritize the user stories. The aim is to have a Minimum Viable Product (MVP) segmented into a MVP1 and MVP2 release (as a guideline). We now have our initial product backlog.