The effort required for Product Backlog Refinement can vary widely and is not fixed by Scrum. In the early Sprints, the effort may be higher as the Scrum Team works to detail the necessary work at a low level of detail. As the team progresses and gains a better understanding of the domain and the product, the effort needed for Refinement typically decreases.
In later Sprints, the volume of new work entering the Product Backlog may also reduce, further decreasing the time needed for Refinement. This evolving effort reflects the team’s growing familiarity with the Project and their ability to work more efficiently over time.
