The Scrum Master is one of the three roles in Scrum. The main tasks of a Scrum Master are to

• promote and support Scrum, so to help everyone to understand the Scrum theory, practices, roles and values.
• And the Scrum Master is a servant leader for the Scrum Team.

These are the main tasks of a SM, so how does he or she work?

The Scrum Master supports and coaches the Product Owner:

• he or she ensures that the scope, the goal etc. is clear for everyone
• the Scrum Master coaches the PO how to effectively manage the backlog and
• how to practice agility​.

The Scrum Master supports and coaches the development team:

• he or she coaches the team self-organization and cross-functionality
• the Scrum Master helps the team to remove impediments and of course,
• the Scrum Master is coaching Scrum

The Scrum Master supports and coaches the organization:

• he or she is leading and coaching Scrum,
• helping employees to understand Scrum and
• he or she is working with other Scrum Masters

So the Scrum Master is a

• Sparring Partner for the Product Owner,
• Team Coach for the team and a
• Change Agent for the organization​​.

How does the Scrum Master enable High PerformanceTeams?

The Scrum Master enables High Performance Teams by:

• taking care about everyone being at his or her best,
• understanding the whole team and every individual,
• taking care of
  the team dynamics,
• creating an atmosphere that is positive and productive,
• solving conflicts and
• the Scrum Master is also in charge for protecting the team.