CD stands for Continuous Delivery or/and Continuous Deployment, which are related to each other in concept and can be used interchangeably. It means that all code changes by the developer are automatically bug tested and deployed to a production environment. When using TestUp, tests are triggered after each commit to the master branch using Git, Jenkins, or other Zapier Plugins. CD addresses the issue of operations teams getting overloaded with manual processes, which may cause delays in delivering apps.