Dark data is the info companies collect but don’t use, often making up 60-80%...

https://www.bookmarking-online.win/dark-data-is-the-55-of-stored-information-that-companies-collect-but-never

Dark data is the info companies collect but don’t use, often making up 60-80% of their stored data. It matters because keeping this inactive data costs money—some businesses waste up to $2.5 million a year on storage and management