Angela Henry gives a high-level overview of Power BI:
There are lots of reasons to use Power BI, other than, it’s so cool. For instance, Power BI makes it easy to see, in one glance, all the information needed to make decisions. It also allows you to monitor the most important information about your business. Power BI makes collaboration easy and when I say easy I mean EZ! You can also create customized Dashboards tailored to those C-Suite folks or make a completely different dashboard based on the same data for those that actually do the work.
I’m personally astounded at how far visualization tools have come in half a decade.