The Viewer role gives a read-only experience to its users. They can view dashboards, reports, or workbooks in the workspace, but can't browse the datasets or dataflows. Use the Viewer role wherever you would previously use a classic workspace set to "Members can only view Power BI content". Reference: https://powerbi.microsoft.com/en-us/blog/announcing-the-new-viewer-role-for-power- bi- workspaces/