I use elevate and deploy interchangeably sometimes. The package or files are already deployed in the test region, so you are elevating them to the next region (PRD). You could deploy the same code to the test region again, which wouldn't be an elevation since it's already there, and deploy would make more sense.

ASC is Application Security Champion. Essentially the role requires some internal security training then you are responsible for following the processes to identify and remediate vulnerabilities.