A key principle of Agile methodology in test automation is __________ to allow for quick feedback and iteration.

A key principle of Agile methodology in test automation is Continuous Integration. Continuous Integration involves regularly integrating code changes into a shared repository, triggering automated builds and tests. This practice enables quick feedback on the status of the application and allows for rapid iteration. It ensures that changes are validated continuously, reducing the risk of integration issues and promoting collaboration among team members in an Agile development environment.