Dark data is the inactive or unused info companies store but rarely access—up...

https://charlie-wiki.win/index.php/How_Do_I_Build_a_Dark_Data_Cleanup_Plan_That_Legal_Will_Approve%3F

Dark data is the inactive or unused info companies store but rarely access—up to 80% of it. This hidden clutter wastes money, sometimes costing $2.5 million a year, and creates noise that confuses AI projects