What does the term 'Definition of Done' refer to?

The term 'Definition of Done' refers to a clear and shared understanding within the Scrum team of what it means for a piece of work, such as a user story or an increment, to be considered complete. This typically involves meeting specific criteria that ensure a product can be deemed releasable, indicating that it has undergone the necessary quality checks, testing, and documentation, among other prerequisites.

Having a well-defined 'Definition of Done' helps to maintain a consistent quality standard and alignment among team members regarding expectations for delivery. This ensures that work meets the agreed-upon standards and provides transparency to stakeholders about what has been completed in a Sprint.

The other options describe different aspects of Scrum and project management. For example, while the criteria for release can be part of the Definition of Done, it encompasses more than just that. The complete set of requirements for a project pertains to the product backlog, while defining team roles and responsibilities relates to team organization rather than completion criteria. Lastly, the schedule of the Sprint refers to the planning and timing aspects of Scrum, which do not pertain to the concept of 'Done.'