In this presentation, Team Babel will discuss some of the challenges of creating and shipping products and services that are policy dependent. Next, they will talk about an approach called Rules as Code (RaC) which has the potential to address some of these challenges. Lastly, they will show the prototype they have built using the RaC approach. Known as Policy Difference Engine (PDE), the prototype demonstrates how the impact of a proposed change to policy can be modelled.