One of the standard ways to free up storage space on a PC is to delete temporary files, empty the recycle bin, and maybe dump the contents of the downloads folder. The pain is you usually have to do all this manually or at least semi-manually with a system utility or third-party tool.
With the Creators Update, Microsoft is making things a little bit easier with a new automated feature called Storage Sense. The name Storage Sense is nothing new. It first made an appearance in Windows Phone 8.1 and was even spotted way back when we were calling Windows 10, Windows 9.