"Good plans shape good decisions. That's why good planning helps to make elusive dreams come true."- Lester Robert Bittel
During this meeting the product owner describes the highest priority stories to the team. Some questions and negotiation may follow to limit the scope of what is going to be taken to the sprint backlog, the team subsequently discusses the committed to stories and how the implementation will be built (conception, just-in-time design...).The presence of the product owner is important at this part even if he is not directly involved, since further questions and clarification asked by the team may help them taking better technical decision and making better decomposition of the stories into tasks. The tasks are then estimated and each team member chooses what he will be committed to .The velocity input from past stories allows the team to make a realistic commitment to the scope of the work being defined to prevent demotivation coming from the “unrealistic initial estimation” excuse.
At the end, an explicit agreement from the team on the sprint backlog is made, and the product backlog, release and sprint burndown charts are updated.