# PreRollAdDecisionServerConfiguration
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The ad decision server configuration for live pre-roll ads. It contains settings that control how MediaTailor processes VAST responses for pre-roll ad breaks.

## Contents
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 ** VastResponse **   <a name="mediatailor-Type-PreRollAdDecisionServerConfiguration-VastResponse"></a>
The settings that control how MediaTailor processes VAST responses for live pre-roll ad breaks.  
Type: [PreRollVastResponse](API_PreRollVastResponse.md) object  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/mediatailor-2018-04-23/PreRollAdDecisionServerConfiguration) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/mediatailor-2018-04-23/PreRollAdDecisionServerConfiguration) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/mediatailor-2018-04-23/PreRollAdDecisionServerConfiguration)