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

https://holdenlvxt779.theburnward.com/what-is-dark-data-management-not-the-marketing-version

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