Power BI consultant use version control tools like Azure DevOps or Git to track changes and manage report versions. They maintain a clear naming convention for different report versions and regularly back up data models and report files. Before rolling out updates, consultants test reports in a sandbox environment to identify potential issues. When deploying updates, it’s important to communicate changes to stakeholders and ensure a seamless transition by minimizing downtime. Regular auditing of reports and documentation of changes are also best practices.