Decision First also offers several rules for you to reuse. If you find these rules insufficient – you are free to go ahead and create your own.
Enterprise systems usually tend to be too much complicated with a huge number of business rules distributed across the code-base with absolutely no traceability. Many a times, the rules are not reused – drastically increasing the TCO of application and maintainability. Biz First rightly identifies that separating the business rules from the App is one of the best practice to be implemented for success, as followed by many winning enterprises.