Who is designated to modify the Sprint Backlog during a Sprint?

The Development Team is the designated group responsible for modifying the Sprint Backlog during a Sprint. The Sprint Backlog is an evolving artifact that the Development Team organizes to track the work required to meet the Sprint Goal. As the team progresses through the Sprint, they may discover new tasks that need to be added, or they may reassess existing tasks based on their findings or challenges they encounter.

The Development Team's autonomy in managing the Sprint Backlog is key to their ability to self-organize and adapt to changing requirements or unexpected issues. This empowers them to make decisions that directly affect their work dynamics and efficiency, ensuring that they stay focused on delivering value and achieving the Sprint Goal.

In contrast, the roles of the Product Owner, Scrum Master, and Stakeholders are more aligned with providing direction and support rather than making modifications to the Sprint Backlog. The Product Owner is responsible for the content of the Product Backlog, while the Scrum Master facilitates the Scrum process but does not alter the technical work of the Development Team. Stakeholders may provide feedback and suggestions, but they do not make decisions about the Sprint Backlog changes.