User stories are great at capturing product functionality in isolation. But they are not well suited to describe the relationship between different features and capture user journeys and workflows. This blog posts shows how context and activity diagrams can be successfully used to model interactions in user story context.
Business analysts play an important role: Traditionally, they act as the link between the business units and IT, help to discover the user needs and the solution to address them, and specify requirements. But in Scrum, there is no business analyst role. So what happens to the individuals?