https://aws.amazon.com/iam/

https://docs.aws.amazon.com/STS/latest/APIReference/welcome.html
https://docs.aws.amazon.com/STS/latest/APIReference/API_Operations.html
https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html

https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/prog-services-sts.html