Amazon Cognito user pools now supports private connectivity with AWS PrivateLink

Amazon Cognito user pools now supports AWS PrivateLink for secure and private connectivity. With AWS PrivateLink, you can establish a private connection between your virtual private cloud (VPC) and Amazon Cognito user pools to configure, manage, and authenticate against your Cognito user pools without using the public internet. By enabling private network connectivity, this enhancement eliminates the need to use public IP addresses or relying solely on firewall rules to access Cognito. This feature supports user pool management operations (e.g., list user pools, describe user pools), administrative operations (e.g., admin-created users), and user authentication flows (sign in local users stored in Cognito). OAuth 2.0 authorization code flow (Cognito managed login, hosted UI, sign-in via social identity providers), client credentials flow (Cognito machine-to-machine authorization), and federated sign-ins via SAML and OIDC standards are not supported through VPC endpoints at this time. You can use PrivateLink connections in all AWS Regions where Amazon Cognito user pools is available, except AWS GovCloud (US) Regions. Creating VPC endpoints on AWS PrivateLink will incur additional charges; refer to [AWS PrivateLink pricing page](https://aws.amazon.com/privatelink/pricing/) for details. You can get started by creating an AWS PrivateLink interface endpoint for Amazon Cognito user pools using the AWS Management Console, AWS Command Line Interface (CLI), AWS Software Development Kits (SDKs), AWS Cloud Development Kit (CDK), or AWS CloudFormation. To learn more, refer to the documentation on [creating an interface VPC endpoint](https://docs.aws.amazon.com/vpc/latest/privatelink/create-interface-endpoint.html)[ ](https://docs.aws.amazon.com/vpc/latest/privatelink/create-interface-endpoint.html)and [Amazon Cognito’s developer guide](https://docs.aws.amazon.com/cognito/latest/developerguide/vpc-interface-endpoints.html).