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::DevOpsGuru::ResourceCollection ResourceCollectionFilter
<a name="aws-properties-devopsguru-resourcecollection-resourcecollectionfilter"></a>

 Information about a filter used to specify which Amazon resources are analyzed for anomalous behavior by DevOps Guru. 

## Syntax
<a name="aws-properties-devopsguru-resourcecollection-resourcecollectionfilter-syntax"></a>

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

### JSON
<a name="aws-properties-devopsguru-resourcecollection-resourcecollectionfilter-syntax.json"></a>

```
{
  "[CloudFormation](#cfn-devopsguru-resourcecollection-resourcecollectionfilter-cloudformation)" : CloudFormationCollectionFilter,
  "[Tags](#cfn-devopsguru-resourcecollection-resourcecollectionfilter-tags)" : [ TagCollection, ... ]
}
```

### YAML
<a name="aws-properties-devopsguru-resourcecollection-resourcecollectionfilter-syntax.yaml"></a>

```
  [CloudFormation](#cfn-devopsguru-resourcecollection-resourcecollectionfilter-cloudformation): 
    CloudFormationCollectionFilter
  [Tags](#cfn-devopsguru-resourcecollection-resourcecollectionfilter-tags): 
    - TagCollection
```

## Properties
<a name="aws-properties-devopsguru-resourcecollection-resourcecollectionfilter-properties"></a>

`CloudFormation`  <a name="cfn-devopsguru-resourcecollection-resourcecollectionfilter-cloudformation"></a>
 Information about Amazon CloudFormation stacks. You can use up to 1000 stacks to specify which Amazon resources in your account to analyze. For more information, see [Stacks](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/stacks.html) in the *Amazon CloudFormation User Guide*.   
*Required*: No  
*Type*: [CloudFormationCollectionFilter](aws-properties-devopsguru-resourcecollection-cloudformationcollectionfilter.md)  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Tags`  <a name="cfn-devopsguru-resourcecollection-resourcecollectionfilter-tags"></a>
The Amazon tags used to filter the resources in the resource collection.  
Tags help you identify and organize your Amazon resources. Many Amazon services support tagging, so you can assign the same tag to resources from different services to indicate that the resources are related. For example, you can assign the same tag to an Amazon DynamoDB table resource that you assign to an Amazon Lambda function. For more information about using tags, see the [Tagging best practices](https://docs.amazonaws.cn/whitepapers/latest/tagging-best-practices/tagging-best-practices.html) whitepaper.   
Each Amazon tag has two parts.   
+ A tag *key* (for example, `CostCenter`, `Environment`, `Project`, or `Secret`). Tag *keys* are case-sensitive.
+ A field known as a tag *value* (for example, `111122223333`, `Production`, or a team name). Omitting the tag *value* is the same as using an empty string. Like tag *keys*, tag *values* are case-sensitive. The tag value is a required property when AppBoundaryKey is specified.
Together these are known as *key*-*value* pairs.  
The string used for a *key* in a tag that you use to define your resource coverage must begin with the prefix `Devops-guru-`. The tag *key* might be `DevOps-Guru-deployment-application` or `devops-guru-rds-application`. When you create a *key*, the case of characters in the *key* can be whatever you choose. After you create a *key*, it is case-sensitive. For example, DevOps Guru works with a *key* named `devops-guru-rds` and a *key* named `DevOps-Guru-RDS`, and these act as two different *keys*. Possible *key*/*value* pairs in your application might be `Devops-Guru-production-application/RDS` or `Devops-Guru-production-application/containers`.
*Required*: No  
*Type*: Array of [TagCollection](aws-properties-devopsguru-resourcecollection-tagcollection.md)  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)