Dark data is the information companies collect but never use—think of old...

https://www.seo-bookmarks.win/dark-data-is-the-inactive-or-unused-data-stored-but-never-analyzed-around-55

Dark data is the information companies collect but never use—think of old files, logs, or emails just sitting around. It can make up 60-80% of all inactive data, taking up space and costing businesses an average of $2.5 million every year