For most teams there is no need for a full Scrum master role. ... It better to have the Scrum master as a part time role in the team, that way the Scrum master is always there when you need him/her. Scrum masters can help their team members to solve impediments.

Do Scrum Masters actually do anything?

The Scrum Master is not Master of Ceremonies however. They can provide the shell for an event — a loose framework the team operate within, but the content is up to the team. The team will get more out of these events if they learn the best way to get results from each.

How important is a Scrum Master?

At the product owner level, the Scrum master facilitates planning and helps product owners understand and adhere to Scrum techniques and practices. At the team level, the Scrum master provides guidance, coaching, support and facilitation, and helps remove any obstacles that teams may encounter along the way.