Today, we added a tool for bulk importing your user identities into Your User Pools in Amazon Cognito. This tool makes it easy for developers to migrate their existing users from their existing identity provider to an Amazon Cognito user pool. User attribute values are imported with a .csv file, which can be uploaded through the console, our APIs, or CLI. When imported users first sign in, they confirm their account and create a new password with a code sent to their email address or phone. There is no additional cost for using the import tool. To learn more, see our import tool documentation.