Advanced Techniques and Tips

1. Combine variables: Create complex values by joining multiple variables: `{{$firstName}} {{$lastName}}`.
2. Conditional dynamic values: Utilize pre-request scripts to set variable values based on conditions. Access and manipulate variables using Postman scripting language (`pm.environment.get(“API_KEY”)`)
3. Dynamic tests: Inject dynamic values into test assertions for flexible validation.
4. Share variables with team members: Collaborate on test suites by sharing environment and collection variables.

Postman’s dynamic variables are powerful tools to help developers perform API testing with less effort. They provide flexible ways to inject and manage data directly into requests and scripts. They can be configured in the folder, environment, or even in a single request. They promote consistency and also by simplifying repetitive tasks they save a lot of time.