What Is Data Mapping?

Data mapping is taking a value from one step in your workflow and using it in a later step.

That's it. That's the whole concept.

Example: Your weather API returns { "temperature": 72, "condition": "Sunny" }. Later, in an email step, you want to use those values. You "map" them—you tell the email step to grab the temperature value from the API response and insert it where you want.

The email doesn't contain "72" hardcoded. It contains a reference that says "get the temperature from the API output." When the workflow runs, that reference is replaced with the actual value.