Consistent Sprint durations reduce complexity and increase predictability. When the length of a Sprint is constant, it helps in planning and setting expectations for the team and stakeholders. It also aids in developing a rhythm and cadence that can be relied upon.
While the length of a Sprint can change if the Scrum Team decides to do so for a good reason, this should be an infrequent occurrence. Changing the duration of a Sprint should not happen while a Sprint is underway, ensuring stability and continuity in the work process.
