How are environment variables represented in Postman?

In Postman, environment variables are represented with double curly brackets, such as {{variable}}. This notation allows users to easily access and substitute variable values within requests, scripts, or environments.

When you use double curly brackets, Postman dynamically replaces the placeholder with the actual value of the variable when executing the request. This feature is particularly useful for testing different scenarios, as it enables you to switch values based on various environments without changing the entire request structure.

By leveraging this format, users can manage their API testing more efficiently and keep their requests clean and maintainable.