The Daedalus activity in this project was focused on the decisions making processes systems through the use of Business Rules. This type of technology is useful in environments in which the policies, processes and business logic evolve too rapidly for the traditional systems of development of computer applications to manage changes. In these cases, the use of high-level business rules would make possible to update and show applications more rapidly. The field of bank or insurance is a clear example of this type of environments in which the market needs change continually.

A business rule can be seen as an expression defining and conditioning one aspect of the business; it aims at expressing the knowledge of a business or controlling its behaviour, and is usually represented as if-then rules. The fundamental attractiveness of these business rules is its potential to separate the knowledge about the business from its implementation, so that this knowledge can be changed without changing the source code.

The rules engine will have to value and run these rules. There is currently a great variety of these engines, among them Fair Isaac's Blaze Advisor, ILOG JRules and the open source engine JBoss Rules, among others.

Among the Daedalus tasks there is the development of a tool making possible to make the creation of business rules independent from the rules engine chosen for its execution, defining also a methodology that makes the integration of this process of creation of business rules in the life cycle of development of applications established in an organization easier. This tool was named K-Site Rules and it is one of the Daedalus' products.