Postman Environment and Global Variables

Environment Variables

Scoped to a specific Environment (e.g., "QA" or "Production"), these variables let the same request adapt automatically depending on which environment is currently active.

Global Variables

Available across all Collections and Environments in a Postman workspace, useful for values that should stay constant no matter which environment is selected.

Using Variables in Requests

Variables are referenced with double curly braces, e.g. {{base_url}}/users/{{user_id}}, keeping requests clean, reusable, and easy to maintain.