Security Token Service

Provides temporary, short lived credentials to be used with identity federation, delegation, cross-account access, and IAM roles.

CLI Reference - https://awscli.amazonaws.com/v2/documentation/api/latest/reference/sts/index.html

API Reference - https://docs.aws.amazon.com/STS/latest/APIReference/welcome.html

https://stackoverflow.com/questions/63241009/aws-sts-assume-role-in-one-command

https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_use-resources.html

Session policy - https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session