They're fully compliant with Dr. Rolf Hichert's IBCS (International Business Communication Standards). This certificate ensures that business information is presented clearly, concisely and consistently across the cloud, mobile and desktop versions of Power BI. The IBCS standard design notation is rendered automatically, without adjusting any kind of settings!
Meanwhile, Microsoft certificate guarantees that Zebra visuals are safe to use. An internal Microsoft team has performed strict security tests that verify these visuals don't access external services or resources, and they follow secure coding patterns and guidelines. For visuals to be certified, they have to meet detailed requirements when it comes to code repository, file, command, compiling and source code.
Once a Power BI visual is certified, it offers more features, like exporting reports to PowerPoint and PDF, or display the visual in received emails, when subscribing to report pages.