Who leads the Scrum team?

The Scrum Master leads the Scrum meetings, identifies the initial backlog to be completed in the sprint, and empirically measures progress toward the goal of delivering this incremental set of product functionality. The Scrum master ensures that everyone makes progress, records the decisions made at the meeting and tracks action items, and keeps the Scrum meetings short and focused.

The Scrum master works constantly to reduce product risk through the incremental delivery of features, rapid response to development obstacles, and continual tracking of the delivery of backlog items.