Dark data is the inactive or hidden information lurking in your storage—often...

https://www.bokkmarking-signs.win/dark-data-is-all-the-information-your-team-stores-but-rarely-uses-up-to-80-of

Dark data is the inactive or hidden information lurking in your storage—often 55% of what companies keep. It’s not just taking up space; it’s costing you money and creating noise that confuses AI projects