Automate user-level custom permissions for Amazon Quick
aws ·
The article describes how to automate user-level custom permissions in Amazon Quick to enforce least privilege as environments scale. It presents four architectural patterns covering key user lifecycle stages: applying permissions at user creation via the RegisterUser API, setting account-level or role-level default profiles using UpdateAccountCustomPermission and UpdateRoleCustomPermission APIs, implementing event-driven logic with Amazon EventBridge and AWS Lambda to detect group membership changes and apply permissions dynamically, and running retroactive batch updates for existing users. The event-driven approach supports both native Quick groups and IAM Identity Center groups. The authors recommend combining default profiles with event-driven automation to create layered security, preventing gaps when users are provisioned but not yet assigned to groups. The post also includes deployment instructions using CloudFormation, IAM roles, and Lambda functions for implementation.
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