This is the new *Amazon CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [Amazon CloudFormation User Guide](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::RTBFabric::Link Action
<a name="aws-properties-rtbfabric-link-action"></a>

Describes a bid action.

## Syntax
<a name="aws-properties-rtbfabric-link-action-syntax"></a>

To declare this entity in your Amazon CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-rtbfabric-link-action-syntax.json"></a>

```
{
  "[HeaderTag](#cfn-rtbfabric-link-action-headertag)" : {{HeaderTagAction}},
  "[NoBid](#cfn-rtbfabric-link-action-nobid)" : {{NoBidAction}}
}
```

### YAML
<a name="aws-properties-rtbfabric-link-action-syntax.yaml"></a>

```
  [HeaderTag](#cfn-rtbfabric-link-action-headertag): {{
    HeaderTagAction}}
  [NoBid](#cfn-rtbfabric-link-action-nobid): {{
    NoBidAction}}
```

## Properties
<a name="aws-properties-rtbfabric-link-action-properties"></a>

`HeaderTag`  <a name="cfn-rtbfabric-link-action-headertag"></a>
Describes the header tag for a bid action.  
*Required*: No  
*Type*: [HeaderTagAction](aws-properties-rtbfabric-link-headertagaction.md)  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`NoBid`  <a name="cfn-rtbfabric-link-action-nobid"></a>
Describes the parameters of a no bid module.  
*Required*: No  
*Type*: [NoBidAction](aws-properties-rtbfabric-link-nobidaction.md)  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)