Business intelligence, or BI, is a decision support system. Its aim is to help make business decisions, strategic as well as operational/tactical.
Business intelligence is viewed differently by the two groups that use it—business and IT. While IT usually views it as a tool, business views it as information.
Concepts and methods to improve business decision making by using fact-based support systemsHoward Dresner
Decision support systems as well as BI aim to provide information to decision makers so that it enables them to identify problems and make sound business decisions.