The updated Business Rules service gives you access to Decision Composer, an experimental cloud-based modeling environment, supporting both data and decision modeling. More details in this announcement.
Additionally, the Business Rules service is also available on IBM Bluemix Dedicated. With Bluemix Dedicated you can have a secure, private cloud environment with physically isolated hardware in an IBM datacenter. It gives you the ability to control the actual location of your cloud environment and offers you a totally isolated network. The cloud simply becomes an extension of your own data center. Business Rules on Bluemix Dedicated offers you a great opportunity to securely run your business decisions in a strictly controlled, managed environment.