Insight inspects each of the sites that you've connected to the Acquia Network, based on 3 parameters:
Adherence to best practices
Insight displays an alert for each of the items that it examines, and creates an overall rating for your site based on the types of alerts it encountered. Insight does a complete static code analysis bringing to you new security and best practice recommendations and alerts indicating cross site scripting, diffs on modules that have been forked and bug fix updates etc.
“I just wanted to let you know that I’m really pleased with the go-live, very smooth and no problems at all.