What is a valid response if a Product Owner prefers to use burn-up charts instead of burn-down charts?

Using burn-up charts instead of burn-down charts is a perfectly acceptable choice for a Product Owner. Both charts serve as tools to visualize progress in a Scrum project, but they do so in different ways. Burn-up charts show how much work has been completed and how much work remains, providing a clear picture of progress over time. This can be particularly helpful for stakeholders who want to see not only how much has been accomplished but also how the scope of work may change.

Considerations for using burn-up charts include their ability to accommodate changes in scope, making them an effective option for projects where requirements may evolve. This flexibility allows the team and stakeholders to get a more comprehensive view of the project's status.

Since there is no requirement in Scrum that mandates the use of one chart over the other, the Product Owner's preference for burn-up charts aligns with the agile principle of tailoring practices to best fit the team's context and needs. Thus, embracing the choice of burn-up charts as valid reflects an understanding of Scrum's adaptability and the importance of collaboration in determining the best approach for the team and stakeholders.