About
cognito Identity Pool is a way to authorize users to use AWS services.
They are the containers that Cognito Identity uses to keep your apps’ federated identities organized.
Identity Pool associates federated identities from social identity providers with a unique user specific identifier.
Identity Pools do not store any user profiles (as user pools do)
An identity pool can be associated with one or many apps.
If you use two different identity pools for two apps then the same end user will have a different unique identifier in each Identity Pool.
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Management
Creation
https://docs.aws.amazon.com/cognito/latest/developerguide/tutorial-create-identity-pool.html