Amazon Verified Permissions is a fully managed authorization service that separates authorization logic from application logic. It uses the Cedar policy language and consists of a policy store, schema, and policies. The policy store contains policies and a schema that validates them. The schema defines entity types, actions, and attributes for authorization decisions. Policies permit or forbid principals to take actions on resources. The service supports fine-grained permissions, including attribute-based and role-based access control. It also offers a test bench feature for policy testing and troubleshooting. Amazon Verified Permissions can be deployed using Terraform and integrated with other AWS services like Amazon Cognito and AWS CloudTrail. This service is designed for custom applications and should not be confused with AWS Identity and Access Management (IAM).