Amazon Cognito now supports SMS Sandbox from Amazon SNS

Amazon Cognito now supports SMS Sandbox in Amazon SNS. Amazon Cognito makes it easy to add authentication, authorization, and user management to your web and mobile apps. Amazon Cognito scales to millions of users and supports sign-in with social identity providers, such as Apple, Facebook, Google, and Amazon, and enterprise identity providers via standards such as SAML 2.0 and OpenID Connect.

Source:: Amazon AWS