Phil Seamark dives into storage modes in Power BI:
How to choose the correct storage mode for Power BI Tables.
This article aims to help explain the different storage modes available when designing an aggregation strategy for a Power BI Report. What each storage mode is and when you would use it. Picking the correct storage mode for each table in your model can significantly affect overall performance.
Click through for the tl;dr version, but stay for the whole thing.