# Reference
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The *Service Authorization Reference* provides a list of the actions, resources, and condition keys that are supported by each Amazon service. You can specify actions, resources, and condition keys in Amazon Identity and Access Management (IAM) policies to manage access to Amazon resources. 

**Topics**
+ [Actions, resources, and condition keys for Amazon services](reference_policies_actions-resources-contextkeys.md)
+ [Related resources](#sar_related-resources)

## Related resources
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For related information found in the *IAM User Guide*, see the following resources:
+ [Tutorial: Create and attach your first customer managed policy](https://docs.amazonaws.cn/IAM/latest/UserGuide/tutorial_managed-policies.html)
+ [Amazon services that work with IAM](https://docs.amazonaws.cn/IAM/latest/UserGuide/reference_aws-services-that-work-with-iam.html)
+ [Policy evaluation logic](https://docs.amazonaws.cn/IAM/latest/UserGuide/reference_policies_evaluation-logic.html)