empowered team that is typically co-located. In order to encourage this cross-functional nature Scrum specifies a very limited set of roles i e a team member, a Scrum Master, and optionally a coach. Team members may have specific specializations, but are not to only doing any one role. (e.g. a developer may test if it is helpful Scrum Masters are expected to be servant leaders who help the team by removing impediments, protecting them from organizational politics, and providing other advice and guidance.