# Ad Decision Server (ADS) response
The ADS response must contain one valid tracking event. At minimum, the tracking event can be an `Impression` tracking event. The tracking event should contain at least one `NonLinear` ad. This ad is the overlay ad, taking the form of a static, HTML, or iFrame resource.
```
2.0
2
```
**Example 1: DASH manifest source to MediaTailor**
```
...
{{SCTE35-binary}}
...
...
```
**Example 2: MediaTailor personalized DASH manifest containing an ad ID decoration**
```
...
...
...
```