The ScrumMaster is the Scrum team’s process authority. In this capacity, the ScrumMaster is empowered to ensure that the Scrum team enacts and adheres to the Scrum values, principles, and practices along with the Scrum team’s specific approaches. The ScrumMaster continuously helps the Scrum team improve the process, whenever possible, to maximize delivered business value.
Authority in this context is not the same type of authority that a functional manager or project manager would have. For example, the ScrumMaster doesn’t hire and fire and cannot dictate to the team what tasks it should do or how to do them. The ScrumMaster also is not responsible for making sure the work gets done. Instead, the ScrumMaster helps the team define and adhere to its own process for making sure the work gets done.