Mike Cohn discusses what I find to be one of the most challenging aspects of working as a ux designer in an agile environment: “The goal of the [User Experience Designer] is to add detail to the story in a just-in-time manner.”
This refreshingly concise article explores the creation of feature descriptions for just-in-time for agile software development, and provides some insight into the mechanics of splitting up large features into smaller stories so that you can feed them into the sprints without overdesigning.
If you are interested in this link you might also want to check out Jeff Pattons most recent article ‘The product owner and the product shaped hole.”