Business Rules are at the core of an enterprise and constitute the unique characteristics of how and why they operate the way they do. All businesses have rules whether or not they are recognized for their importance. When business rules are "harvested" and placed in a Business Rules Engine (BRE) they constitute a distinct advantage, especially for large enterprises as they represent the focal point of business agility. Sectors such as finance, insurance, and health care are particularly vulnerable to volatility in the market and government regulation. The ability to adapt quickly and respond to competitive conditions is a key driver in successful enterprises.