Dynamic Data: Imagine you have a test that checks that different user can login. Instead of hardcoding each steps, you can use variables and use the same step without rewriting the entire test script.

Multiple Scenarios: You can use variables to run the same test with different inputs, like different user names, passwords, or product IDs. This helps you cover a wider range of scenarios without creating separate tests for each variation.

Clearer Scenarios: Variables make your test scripts more readable. Instead of seeing hardcoded values scattered throughout, you have meaningful names like username , password , or product_id . This makes it easier to understand what the test is doing.

Easy Updates: If you need to change a value, you only need to update the variable definition, not every place it’s used in the test. This saves time and reduces the risk of errors.