Dark data is the information your company collects but never uses—up to 55% of...

https://www.stall-bookmarks.win/dark-data-is-the-inactive-or-unused-information-sitting-in-your-systems-often

Dark data is the information your company collects but never uses—up to 55% of all data. This unused data takes up space, wastes about $2.5 million in storage costs, and creates noise that can confuse AI systems