> **Experimental**
>
> `@aws-cdk/aws-msk-alpha` is an [**experimental**](/stability) (alpha) package: its API may change in any release, without a major version bump.
# VpcConfig

The configuration of the Amazon VPCs for the cluster.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/serverless-cluster.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-msk-alpha/lib/serverless-cluster.ts#L32)

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as msk_alpha from '@aws-cdk/aws-msk-alpha';
import { aws_ec2 as ec2 } from 'aws-cdk-lib';

declare const securityGroup: ec2.SecurityGroup;
declare const subnet: ec2.Subnet;
declare const subnetFilter: ec2.SubnetFilter;
declare const vpc: ec2.Vpc;
const vpcConfig: msk_alpha.VpcConfig = {
  vpc: vpc,

  // the properties below are optional
  securityGroups: [securityGroup],
  vpcSubnets: {
    availabilityZones: ['availabilityZones'],
    onePerAz: false,
    subnetFilters: [subnetFilter],
    subnetGroupName: 'subnetGroupName',
    subnets: [subnet],
    subnetType: ec2.SubnetType.PRIVATE_ISOLATED,
  },
};
```

## Properties

- `securityGroups`: [ISecurityGroup](/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.ISecurityGroup.html)[] — The security groups associated with the cluster.

  **Default:** create new security group

  You can specify up to 5 security groups.

- `vpc`: [IVpc](/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.IVpc.html) (required) — Defines the virtual networking environment for this cluster.

  Must have at least 2 subnets in two different AZs.

- `vpcSubnets`: [SubnetSelection](/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.SubnetSelection.html) — The subnets associated with the cluster.

  **Default:** the Vpc default strategy if not specified.