According to the Scrum Guide, a Scrum Master is ?a facilitator for the team and the product owner. Rather than manage the team, the scrum masterworks to assist both the scrum team and the product owner.?
Here?s a simple analogy. You can think of scrum master as a lighthouse of the scrum team. A lighthouse helps sailors navigate easily through areas of danger, harbor entrances and reach the shore sound and safe. Similarly, a scrum master helps the team overcome impediments and guides them to achieve the best result. He ensures that the team understands and lives by the values and practices of the scrum.