When the state is "On Hold" and the "On Hold Reason" is "Awaiting Caller", the incident state will automatically change to "In Progress" once the caller user makes a change to the incident.

Which of the following roles can delete cart layout?

A developer is trying to decide between creating a Visualforce component or a Lightning component for a custom screen.
Which functionality consideration impacts the final decision?

What is the base table for CMDB?

Part of a custom Lightning Component displays the total number of Opportunities in the org, which is in the millions. The Lightning Component uses an Apex Controller to get the data it needs.
What is the optimal way for a developer to get the total number of Opportunities for the Lightning Component?