Testing
From MMwiki
Before going live with the site or application, Millennial Media needs to verify the traffic and ensure you are sending in the required variables into our system (User Agent, IP Address, and AUID.) This allows us to ensure that we deliver ads to your site or application correctly. This is a key step in going live on the Millennial Media network. Without properly validating values, we will be unable to launch with your site or application. In addition, the Millennial Media team will work to ensure that you are Rich Media compliant as well.
Finally, your testing environment should be as close to your production environment as possible to ensure that we do not have any issues when going live.