In contrast to the traditional business applications, a Business Rules Engine facilitates the implementation of agile and adaptive Business Process Management Systems (BPMS) by promoting an isolation of the business rules of an application from the application’s code. Hence, at a later point in time, if we intend to modify the business rules, the applications logic would perform as usual without having to rewrite or change the application’s source code.

Business Process Rules can be integrated with the Business Process Editors that are used to design the Business Process Diagrams. The Business Process Engine would execute the Business Processes and the Business Process Rules Engine would read the business process rules (that form a part of the business processes and are attached to them) from the rules repository and execute them. Integrating the Business Process Rules Engine (BRE) with a Business Process Management System (BPMS) promotes better process automation and improves the agility of the BPMS as a whole. In sharp contrast, in the traditional applications, the business rules based on which the application’s business logic would function are embedded in the application’s code itself and are much less flexible and adaptable for changes.