Dark data is all the information companies collect but never use. It often...

https://future-wiki.win/index.php/Why_Is_Metadata_Tagging_a_Big_Deal_for_AI_Search%3F

Dark data is all the information companies collect but never use. It often makes up 60-80% of stored data. This unused info wastes storage space and can cost businesses up to $2.5 million a year in unnecessary expenses