>That's true, you can have hybrid approaches. Maybe 95% of the data is something you refresh daily, but 5% changes so frequently that you want to query it in real time.
>
>You have have a Power BI report with 5 datasets, where four are based on a published model that's updated daily (or twice a day, or whatever), and one dataset that fires a query back to the original source. Now, to do that, you need to install a gateway back to the data source. This can *usually* work, but there are some nuances and oddities with it that some people experience.
>
>For that reason, most places using Power BI will only take the hybrid approach if there is a compelling reason. There's nothing wrong with the idea and I'm glad you brought it up - but truthfully, knowing what I know about Power BI, I will try to do everything to steer people away from that - more because of the implementation than the idea itself.

Thanks for the additional information, that is very useful.