Team Roles

Many agile organizations are comprised of the following roles:

Product Owner	An individual who represents the voice of the customer and manages what is in (or not in) a backlog (product, release, and sprint).
Scrum Master	An individual who leads the team during a sprint, including running daily standup, tracking velocity and burndown, and dealing with impediments that have been identified by team members.
Team Member	A team member is a member of a team. A team comprises all of the team members who commit to all of the work required to complete a single story during a single sprint, including all tasks and dependencies that are related to that story.