Dark data is all the unused information companies collect but never analyze or...

https://www.bust-bookmark.win/dark-data-is-all-the-information-businesses-collect-but-never-use-like-old

Dark data is all the unused information companies collect but never analyze or use. It can be huge—about 60-80% of data sits inactive, hidden away. That unused data costs businesses up to $2.5 million a year in storage and management fees