There are so many cool things to show in Microsoft Power BI that we debated what to show in the bonus chapter for a long time. Finally, we settled on creating a visual that uses a map as the foundation and creating visuals when our data source is a series of files.
The former is pretty self-explanatory. We'll create a map that displays our customer balances by the location of the customer itself. The latter is a great solution when data is fed to us through a series of files, such as from a point of sale system. A point of sale system would provide us with a report every day. These reports can be placed in a folder, and we can read all the files from the folder as if they were one data source. Although it may seem that this is a less common scenario, at some point in the future, you'll need it and be glad that you know about it.