An app builder has been asked to integrate Salesforce with an external web service. The web service must be notified every time an opportunity is won.
What are two ways to satisfy this requirement? (Choose two.)

A user asks for a checkbox to be automatically ticked if the annual revenue field is greater than a million.
Which formula to trigger a workflow would satisfy this requirement?

What are the limitations of workflow rules?

Workflow rules on custom objects are NOT automatically deleted if the custom object is deleted.

What sandbox should you use for data load and integration testing?