A key CI/CD capability of any enterprise solution is a testing framework to write and...

MUnit:This is the exclusive application testing framework for Mule4. It allows developers to build automated tests for their APIs and integrations.

CI/CD Integration:MUnit is designed to run as part of the continuous integration (CI) pipeline (usually executed via the Mule Maven Plugin during the build phase). If the MUnit tests fail, the build fails, preventing faulty code from deploying to production.

Why others are incorrect:

Exchange Mocking Service:Simulates an API based on RAML fordesignvalidation, not for testing the actual implementation logic.

Mule Maven Plugin:The tool thatexecutesthe build/deploy, but MUnit is theframeworkthat writes/runs the tests.