Data.ext

Exchange-specific extensions for this provider's data. IAB Tech Lab's Seller Defined Audiences guidance uses it to name the taxonomy the segment IDs come from, in a segtax key.

CurrentobjectOptionalSince 2.1

Field facts

Path: user.data.ext, app.content.data.ext, dooh.content.data.ext, site.content.data.ext
Object: Data
Type: object
Requirement: Optional
Added: OpenRTB 2.1
Spec section: 3.2.21

How it is used

Buyers need segtax to know whether segment IDs refer to an audience taxonomy or a content taxonomy. Other keys follow each exchange's documentation.

Example

Where the field sits in a payload, with everything else left out:

{
  "id": "req-1",
  "user": {
    "data": [
      {
        "ext": {
          "segtax": 4
        }
      }
    ]
  }
}

Version history

Added in OpenRTB 2.1, and present in the latest snapshot. The table shows how each version's spec text types the field.

Versions	Type in the spec	Required	Deprecated
2.1 to 2.2	object	No	No
2.3 to 2.3.1	object	No	No
2.4	object	No	No
2.5 to 2.6-202606	object	No	No