A Sprint can be cancelled if the Sprint Goal becomes obsolete. This could happen when the completion of the work planned for the Sprint no longer makes sense. For instance, the planned work might lose its Value due to shifts in market demands, technological advancements, or strategic changes within the company.
Cancelling a Sprint is a significant decision because it disrupts the Workflow and introduces Waste. As such, it is not taken lightly and is considered a rare occurrence. Only the Product Owner has the authority to cancel a Sprint, ensuring that the decision is made with careful consideration of all relevant factors.