> For the complete documentation index, see [llms.txt](https://docs.exads.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.exads.com/publishers/vast.md).

# VAST

As a Publisher, you use VAST when your video player requests ads from the ad server.

VAST (Video Ad Serving Template) is a specification defined and released by the **Interactive Advertising Bureau (IAB)**. VAST sets a standard for communication requirements between ad servers and video players to present video ads, and it is declared using `XML`.

{% hint style="info" %}
**Note**: Your ad server supports `v3` and `v4.3` of the VAST standard.
{% endhint %}

## Get Started

1. Use the [VAST tag](/publishers/vast/vast-tag.md) for inline video ads.
2. Use a [VAST wrapper tag](/publishers/vast/vast-wrapper.md) when your player requires a wrapper response.

## Tracking

Configure [custom VAST tracking URLs](/publishers/vast/custom-tracking-urls.md) to measure video ad events.


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