Hi : At present there are a lot of components in the MS-BI stack which we use, many of them in a disjointed manner. For example there is the SQL Server stack of ssis, ssas, ssrs. then there is office...
Sanjay, thanks for the comments! We'd like to improve the integration across all these components and over time, we will. Power BI will be the single place for all your data, no matter what system or tool it's in.
