Deploying applications to a staging environment for testing before moving them to production is a standard practice to ensure feature functionality, but manual processes can be inefficient. This tutorial outlines a method for automating the deployment of an API to both staging and production environments using a multi-deployment process, which includes creating a workflow that first deploys the API to a staging environment and runs automated tests using Postman. If the tests pass, the API is automatically deployed to the production environment; otherwise, deployment is halted. The tutorial details prerequisites such as Node.js, Postman, Heroku, CircleCI, and GitHub accounts, and guides users through cloning a Node.js API project, setting up deployment environments on Heroku, configuring API tests with Postman Collections, and automating the testing process with Newman. Finally, it explains how to connect the project to CircleCI to implement an automated workflow that stages, tests, and deploys the application, enhancing efficiency by saving time and effort in real-life tasks.