You do not need to manually build and deploy the applications created in the App Factory as they have the auto build and auto deployment options set by default. When you first create an application or every time a commit happens to the remote repository, the application is automatically built and deployed. If you prefer to trigger builds and deployments manually, you can disable the auto options and carry out manual tasks using the console UI.
Let's see how to disable auto builds and deployment and trigger them manually. If you have not created an application yet, follow the steps in Create an Application from Scratch.