This has been a feature that has been asked for long time! The ability to control who can see what content within a published Power BI App! You can now serve up multiple audiences within a single app.
Announcing Public Preview of Multiple Audiences for Power BI Apps
https://powerbi.microsoft.com/en-us/blog/announcing-public-preview-of-multiple-audiences-for-power-bi-apps/
Publish an app in Power BI
https://docs.microsoft.com/power-bi/collaborate-share/service-create-distribute-apps?source=recommendations