I am fairly new to analysis services and MS Power BI. We are currently running some experiments on using Azure Analysis Service tabular model, combined with a live connection to MS Power BI desktop for reporting. We defined the tabular model and some DAX measures to use in the AAS in MS Visual Basic.
I was wondering what happens when a Power BI user creates extra DAX measures in PowerBI desktop app, so not in the actual tabular model definition. I tested to see if it is possible and it is in the Power BI desktop version of February 2019. How and where is the measure then calculated? Is it propagated back for calculation in the tabular model in AAS? Or is it somehow only kept in-memory of the PowerBI tenant? What is the advised approach for this?