Hierarchies in Power BI

Hello all:

I’m fairly new to Power BI and understand the general concept of hierarchies. The question I have is what is the difference in creating an explicit hierarchy vs. stacking hierarchical columns in a power bi visual. For example, if I have a hierarchy of City, County and State, I can explicitly create the hierarchy (naming is something like locale) or I can drag, State, County, and City into the rows section of my visual to create a hierarchical representation. Is there a fundamental difference? Is there a best practice I should apply?

Thanks for your help!