An 'information silo' is a term used to describe a situation where different teams, departments, or organizations in a company don't share information with each other. It is like each team has their own little silo or room, and the information doesn't get passed on to the other silos. This makes it difficult to make the best decisions, or to even know where the information should go in the first place. It can lead to wasted time, lost resources, and confusion.