A common question in interview questions for Power BI, don't miss this one.   Premium Capacity is a way to have a dedicated server/node for better handling Power BI Service Workload for your organization, which supports up to 1 TB of data storage. Premium capacity can be identified by seeing Diamond icon beside our app workspace, and it can be assigned by Office 365 Global Administrator (OR) Power BI Service Administrator. Diamond icon Steps: Open app.powerbi.com in favorite browser. In navigation page, select respective app workspace Edit Settings Expand Advanced, then enable Premium capacity for it.