14.1What belongs in external automation?

Use external automation to prove things MUnit cannot:

real deployed Mule endpoint works

real authentication works

real Salesforce connector works

real SOQL/schema/permissions work

real environment configuration is correct

Salesforce records are actually created/updated

asynchronous processing really completes

idempotency works against real infrastructure

MUnit can simulate Salesforce.

External tests prove Salesforce actually participates correctly.