When developing or testing APIs, Postman makes the job simple for us. There are many tools available that we can use to do our development or testing with ease. What I found to be most beneficial are environment variables. If you are working with many different environments, you may set up each with any authorization tokens, urls, or any other variables you find necessary to set. After setting up your variables and building your request, all that’s left is to select your environment and make your call.