Dark data is the inactive or unused information stored in your systems—about...

https://ricardosinterestingwords.swiftnestly.com/posts/is-it-true-that-unused-enterprise-data-grows-at-20-cagr-through-2027

Dark data is the inactive or unused information stored in your systems—about 60% to 80% of it just sits there. This data isn’t just taking up space; it costs money to keep and can create noise that messes up AI projects