How does this work in Postman?

Let's map the request process with a simple diagram:

Looking at the diagram, we can understand that:

1. After you enter the request URL (postman-echo.com/get) in Postman hit the Send button
2. When the API server postman-echo.com receives the request, it returns a response
3. Postman receives the response and then it is made available in Postman to visualize the interface