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...
If PowerBI becomes the "Place for all your data", the on-prem will be absolutly necessary. I understand the push to O365 and the cloud in general, but that is many years down the line for most businesses.
