Dark data is all the information companies collect but never use—often 60 to...

https://www.bookmark-url.win/dark-data-is-the-stuff-companies-collect-but-never-use-up-to-80-of-their

Dark data is all the information companies collect but never use—often 60 to 80% of their stored data. This unused data takes up space, slows systems, and can cost businesses millions each year to maintain