Learn how Amazon Cognito identity pools enable users to obtain temporary, limited-privilege AWS credentials for accessing other AWS services securely.
Table of Contents
Question
Which statement about Amazon Cognito identity pools is true?
A. Identity pools provide sign-up and sign-in functionality for mobile apps.
B. When using Amazon Cognito identity pools, a user would not also use Amazon Cognito user pools.
C. Identity pools replace the need for a third-party identity provider.
D. With an identity pool, users can obtain temporary, limited-privilege AWS credentials to access other AWS services.
Answer
D. With an identity pool, users can obtain temporary, limited-privilege AWS credentials to access other AWS services.
Explanation
With an identity pool, a users can trade an authentication token from an identity provider for temporary AWS security credentials.
Amazon Cognito identity pools provide a way for users to obtain temporary, limited-privilege AWS credentials to access other AWS services. This is the correct answer among the given options.
Let’s break down the other options to understand why they are incorrect:
A. Identity pools do not provide sign-up and sign-in functionality for mobile apps. This functionality is provided by Amazon Cognito user pools, not identity pools.
B. When using Amazon Cognito identity pools, a user can also use Amazon Cognito user pools. Identity pools and user pools serve different purposes and can be used together. User pools handle user authentication, while identity pools manage access to AWS resources.
C. Identity pools do not replace the need for a third-party identity provider. In fact, identity pools allow users to authenticate using external identity providers like Amazon, Facebook, Google, or any OpenID Connect (OIDC) compatible provider. Identity pools then map the authenticated users to AWS IAM roles to grant them access to AWS services.
In summary, Amazon Cognito identity pools enable users to obtain temporary, limited-privilege AWS credentials, which they can use to access other AWS services securely. This is achieved by mapping authenticated users from various identity providers to AWS IAM roles, granting them the necessary permissions to interact with AWS resources.
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