During which event do teams preview and elaborate on upcoming stories?

Backlog Refinement is the event where teams come together to prepare and detail upcoming work items, often referred to as stories. This process allows the team to discuss the requirements and clarify any uncertainties, ensuring that the stories are well understood before they are taken into an iteration. The goal is to have a clearer view of the work that lies ahead, allowing for better planning and execution in the upcoming iterations.

During this event, the team can ask questions, prioritize the backlog, and even subdivide larger stories into smaller, more manageable pieces. This ensures that when the iteration planning occurs, the team can effectively commit to delivering the right amount of work.

In contrast, Iteration Planning is focused on selecting stories from the backlog to work on during the next iteration, rather than elaborating on them. The System Demo showcases the work completed in a particular iteration but does not involve previewing upcoming stories. The Inspect and Adapt event is aimed at reflecting on the past work and identifying ways for improvement, not on elaborating future stories. Thus, Backlog Refinement is critical for preparing the team and ensuring they have a solid understanding of what's coming next in the work process.