To create a Business Rules Service project, open the Developer Studio Dashboard, and then scroll down and click Business Rules Service Project.
You can now choose to create a new, empty Business Rules Service project or import an existing one by specifying a Rule Service configuration RSL file. After you configure the rule service, click Finish. The Rule Service Form appears, where you can work in Design view or Source view to configure rules and operations.
You can export your Business Rules Service project as a and create the Composite Application Archive (CAR) that you deploy to the Carbon Server. When grouping your project as a CAR file, an AAR file will be generated, which you can deploy to any WSO2 Business Rules Services Server.