Who determines when it is appropriate to update the Sprint Backlog during a Sprint?

Comprehensive and Detailed In-Depth Explanation:

In Scrum, theSprint Backlogis aliving artifactthat evolves throughout the Sprint as the team gains new insights. The responsibility ofupdating the Sprint Backlog lies exclusively with the Developers, as they are the ones executing the work.

Roles and Responsibilities:

Developers:

They are solely responsible for creating, managing, and updating the Sprint Backlog.

They continuously update it as they learn more about the work needed to achieve theSprint Goal.

Any changes, additions, or deletions to the Sprint Backlog are determined by the Developers based on new information.

Product Owner:

The Product Owner is responsible for managing theProduct Backlog, not the Sprint Backlog.

However, they collaborate with Developers if thescope of the Sprint Backlog needs renegotiation.

They prioritize product value but do not directly modify the Sprint Backlog.

Scrum Team:

The termScrum Teamincludes theDevelopers, Product Owner, and Scrum Master.

While they collaborate,only the Developers make changes to the Sprint Backlog.

Project Manager:

Scrum does not define a Project Manager role.

Traditional project management responsibilities are distributed across theScrum roles.

TheDevelopers are self-organizing, meaning they do not need external direction to update their plan.

Key Scrum Guide Principles Supporting This:

The Sprint Backlog isa plan by and for the Developers.

The Developersown and manage their workthroughout the Sprint.

The Sprint Backlog isadapted dailyto reflect progress toward the Sprint Goal.

No one else, including the Product Owner or Scrum Master, is allowed to modify the Sprint Backlog.

Conclusion:

Only theDevelopershave the authority to update the Sprint Backlog during a Sprint. This ensures that they maintain ownership of their work and adapt as necessary to successfully achieve theSprint Goal.