ServiceNow doesn't recommend having a service for generic requests in the service catalog.

A company wants to implement a new call center process for handling customer service calls. It requires service reps to ask for the caller's account number before proceeding with the rest of their call script.
Following best practices, what should a developer use to meet this requirement?

Which of the following CANNOT be performed by catalog_editor role?

A developer is asked to build a solution that will automatically send an email to the Customer when an Opportunity stage changes. The solution must scale to allow for 10,000 emails per day. The criteria to send the email should be evaluated after all Workflow Rules have fired.
What is the optimal way to accomplish this?

Which script action is called once "Communicate Fix" is clicked?