Agile development have a distinct culture that at first glance seems to conflict with Interaction Design. Therefore, integrating these two areas becomes a challenging task. There is little guidance about integrating them. Very limited empirical evidence exists on agile development and interaction design being combined in practice. In order to better understand how these approaches are combined in practice, a multiple-case study of agile teams working with interaction designers was performed. In the paper, we present a set of ten lessons learned from these studies.