Dark data is the information companies collect but never use—like old files,...

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

Dark data is the information companies collect but never use—like old files, emails, or logs. Studies show 60-80% of stored data sits inactive, costing businesses up to $2.5 million a year in wasted storage and management