Connecting to Azure Analysis Services
Power BI Premium is now a superset of Analysis Services and powerful new features such as composite models and aggregations are exclusive to Power BI Premium. Nonetheless, it wasn't long ago in which Azure Analysis Services (AAS) was Microsoft's flagship semantic modeling tool and thus many organizations' production BI workloads currently leverage AAS models as the source for Power BI and other report types.
Given the additional features and product roadmap of Power BI Premium, deep compatibility between AAS and Power Premium, as well as a straight forward migration path, many AAS (and SSAS) models will eventually be re-deployed to Power BI Premium. Nonetheless, Azure Analysis Services will remain a fully supported and common cloud service that BI developers should be familiar with.
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