anchor.diff:  Take a look at our http://docs.killbill.io/latest/getting_started.html#_using_kill_bill_with_kaui[Getting Started] guide for an introduction to Kaui.
   
   
  -=== Multi Nodes Deployments
  +=== Multi-Tier Deployments
   
   For production deployments, allocating a separate RDS database instance and allowing multiple nodes to handle traffic behind a load balancer is the recommended option. In this model, we rely on AWS ELB to correctly spread the traffic among the various nodes, and also to route traffic to either  Kill Server or KAUI based on the incoming port. Note that such deployment option requires a bit more setup and so we also provide an (easier) way to deploy using https://docs.killbill.io/latest//aws-cf.html[CloudFormation templates]. However, the benefits of this option is that it provides more control in the deployment.
   
  
positive.code: ```
  
  [5] Add the ELB in front of the EC2 instances
  
  TODO
  
  
  == Configuration
  
negative.code: 
  [2] Start the instances
  
  The steps are similar to the one described for the section `Single-Tier Deployment` above, but in addition, when starting the instance, you will need to specify the properties associated with your RDS instance. In order to make it easy, we have created a `User data` template script, which will need to be edited to specify the real values:
  
  ```
  #!/bin/bash
  