Amazon Cognito - User Pools, Identity Pools - AWS Certification


Let’s get a quick overview of Amazon Cognito from an AWS certification perspective.

You will learn

  • What is Amazon Cognito?
  • Why do we need Amazon Cognito?
  • How can you do authorization and authentication with Amazon Cognito?
  • What are User Pools and Identity Pools?

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Amazon Cognito

Amazon Cognito lets you add user sign-up, sign-in, and access control to your web and mobile apps quickly and easily. Amazon Cognito scales to millions of users and supports sign-in with social identity providers, such as Facebook, Google, and Amazon, and enterprise identity providers via SAML 2.0.

Amazon Cognito - User Pools

User Pools help you create your own secure and scalable user directory.

It also helps you to create sign-up pages and customizable web UI to sign in users (with option to social sign-in ).

Amazon Cognito - Identity pools

Identity pools provide AWS credentials to grant your users access to other AWS services.

You can connect identity pools with authentication (identity) providers:

  • Your own user pool OR
  • Amazon, Apple, Facebook, Google+, Twitter OR
  • OpenID Connect provider OR
  • SAML identity providers (SAML 2.0)

You can configure multiple authentication (identity) providers for each identity pool.

Federated Identity is an external authentication (identity) provider.

  • ex: Amazon, Apple, Facebook, OpenID or SAML identity providers

Amazon Cognito - How does it work?

Here are the important steps:

  • 1: Application sends user credentials to identity provider
    • (If authenticated) Identity provider sends a token to application
  • 2: Application sends the token to Identity Pool
    • (If valid token) Identity Pool creates temporary credentials (access key, secret key, and session token) using STS
  • 3: App sends a request with the credentials to the AWS service


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