# AWS::VpcLattice::ServiceNetwork

A service network is a logical boundary for a collection of services. You can associate services and VPCs with a service network.

## Syntax

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

### JSON

<pre>
{
    "Type" : "AWS::VpcLattice::ServiceNetwork",
    "Properties" : {
        "<a href="#name" title="Name">Name</a>" : <i>String</i>,
        "<a href="#authtype" title="AuthType">AuthType</a>" : <i>String</i>,
        "<a href="#tags" title="Tags">Tags</a>" : <i>[ <a href="tag.md">Tag</a>, ... ]</i>
    }
}
</pre>

### YAML

<pre>
Type: AWS::VpcLattice::ServiceNetwork
Properties:
    <a href="#name" title="Name">Name</a>: <i>String</i>
    <a href="#authtype" title="AuthType">AuthType</a>: <i>String</i>
    <a href="#tags" title="Tags">Tags</a>: <i>
      - <a href="tag.md">Tag</a></i>
</pre>

## Properties

#### Name

_Required_: No

_Type_: String

_Minimum Length_: <code>3</code>

_Maximum Length_: <code>63</code>

_Pattern_: <code>^(?!servicenetwork-)(?![-])(?!.*[-]$)(?!.*[-]{2})[a-z0-9-]+$</code>

_Update requires_: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

#### AuthType

_Required_: No

_Type_: String

_Allowed Values_: <code>NONE</code> | <code>AWS_IAM</code>

_Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

#### Tags

_Required_: No

_Type_: List of <a href="tag.md">Tag</a>

_Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## Return Values

### Ref

When you pass the logical ID of this resource to the intrinsic `Ref` function, Ref returns the Arn.

### Fn::GetAtt

The `Fn::GetAtt` intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using the `Fn::GetAtt` intrinsic function, see [Fn::GetAtt](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-getatt.html).

#### Arn

Returns the <code>Arn</code> value.

#### CreatedAt

Returns the <code>CreatedAt</code> value.

#### Id

Returns the <code>Id</code> value.

#### LastUpdatedAt

Returns the <code>LastUpdatedAt</code> value.