An org has a requirement that addresses on Contacts and Accounts should be normalized to a company standard by Apex code any time that they are saved.
What is the optimal way to implement this?

A developer created a Lightning web component that uses a Lightning-record-edit-form to collect information about Leads. Users complain that they only see one error message at a time when they save a Lead record.
Which best practice should the developer use to perform the validations, and allow more than one error message to be displayed simultaneously?

A developer is writing code that requires making callouts to an external web service. Which scenario necessitates that the callout be made in an @future method?

A developer built a Component to be used at the front desk for quests to self-register upon arrival at a kiosk.
The developer is now asked to create a Component for the Utility Tray to alert Users whenever a guest has arrived at the front desk.
What should be used?

A developer gets an error saying 'Maximum Trigger Depth Exceeded'.
What is a possible reason to get this error message?