anchor.diff:  ```
   
   
  -=== Upgrade Steps
  -
  -==== Newer AMIs
  +== Upgrade Steps
  +
  +=== Newer AMIs
   
   
   The Kill Bill core team will provide new AMIs whenever necessary.
  
positive.code: * Kill Bill server and KAUI server instances subnets: `192.168.64.0/18` (zone `1e`) and `192.168.192.0/18` (zone `1b`)
  * RDS subnets: `192.168.128.0/18` (zone `1e`) and `192.168.0.0/18` (zone `1b`)
  
  === CloudWatch Integration
  
  Our AMIs come pre-configured with CloudWatch integration to allow for better diagnostics. Below is a screenshot of the metrics that come for free:
  
  
negative.code: 
  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.
  
  == TroubleShooting Section
  
  === Stack Creation
  
  There are a couple of possible issues when starting the stack from CloudFormation (CFN) and so the goal of this section
  is to provide some tips debugging the issues, and knowledge about where to find various logs. Also keep in mind
  