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

https://www.coast-bookmarks.win/dark-data-is-the-information-your-business-collects-but-never-uses-often-55-of

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