# Reference information for Amazon Identity and Access Management
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Use the topics in this section to find detailed reference material for various aspects of IAM and Amazon STS.

**Topics**
+ [Identify Amazon resources with Amazon Resource Names (ARNs)](reference-arns.md)
+ [IAM identifiers](reference_identifiers.md)
+ [IAM and Amazon STS quotas](reference_iam-quotas.md)
+ [Dual-stack endpoint support](reference_dual-stack_endpoint_support.md)
+ [Interface VPC endpoints](reference_interface_vpc_endpoints.md)
+ [Amazon services that work with IAM](reference_aws-services-that-work-with-iam.md)
+ [Amazon Signature Version 4 for API requests](reference_sigv.md)
+ [IAM JSON policy reference](reference_policies.md)
+ [Simplified Amazon Web Services service information for programmatic access](https://docs.amazonaws.cn/service-authorization/latest/reference/service-reference.html)