In what file format should report and semantic model definitions be saved for version control in Azure Repos?

The correct answer is that report and semantic model definitions should be saved in the PBIP file format for version control in Azure Repos. PBIP files are specifically designed to contain project-level data, and they offer a means to store the settings and metadata associated with a Power BI report or a semantic model.

This format is particularly suited for version control systems as it maintains the necessary structural organization and reusable components of Power BI projects, making it easier to track changes over time. By using PBIP files, teams can effectively manage version histories, collaborate on report development, and ensure that updates are properly documented and integrated within their projects.

While other options like PBIX and PBIT serve specific purposes—PBIX being the standard file format for Power BI Desktop reports with the actual report data included, and PBIT being the template format for creating new reports without underlying data—these do not provide the same structure for version control in the context of Azure Repos. Therefore, choosing the PBIP format aligns best with the requirements for managing report and semantic model definitions in a collaborative environment.