Speaker: Yas Naoi We are successful to establish our development process for Drupal 9 custom module incl. automated testing for PHPUnit by our own GitLab CI/CD pipeline (like d.o's automated testing). As a next step, we have learned Behavior-driven development by Behat to automate to run the acceptance tests for Cloud Orchestration modules. The session will cover how we can use the tool like Behat and write the test scenarios.