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# Sandboxes reference
<a name="sandboxing-reference"></a>

Reference material for understanding the Nitro Sandbox trust boundary, the Cedar policy schema, feature limitations, and the IAM permissions that specific features require.

**Topics**
+ [Security model and parent instance trust assumptions](sandboxing-security-model.md)
+ [Cedar policy schema reference](sandboxing-cedar-schema.md)
+ [Considerations](sandboxing-limitations.md)
+ [IAM permissions for Nitro Sandboxes](sandboxing-iam.md)